Piper PA-31T Cheyenne / T-1020 / T-1040 / Schafer Comanchero 750

PA-31T

First flown on 20 August 1969, four production PA-31T aircraft were completed and eight ordered by the spring of 1974.

198 PA-31T Cheyenne I were built

Cheyenne I

The T-1040 (PA-31-T3) is a turbine powered hybrid combining the fuselage of the Navajo Chieftain with the wing, tail and engines of the Cheyenne 1 A to create a new commuter airliner. Dual controlled and not pressurized, it can carry nine to 11 passengers, the T-1040 was introduced on 25 May 1980.

T-1040 / PA-31-T3

The first production type flew on 17 July 1981, FAA certification was received on 25 February 1981, and deliveries into service during May 1982. The use of wing tip fuel tanks was approved during November 1982. A rear utility door is fitted as standard and an optional 30 cu.ft belly cargo pod was available.

The prototype T-1020 flew for the first time on 25 September 1981, the type was delivered into service during December 1981. Twenty-one T-1020 airliner versions were built.

T-1020

A significant advance in the Navajo family came on 22 October 1973 when Piper flew the first production example of the PA-31T Cheyenne, which combined an airframe generally similar to that of the Pressurized Navajo with two 462kW Pratt & Whitney Aircraft of Canada PT6A-28 turboprop engines. The Piper Cheyenne was certificated in 1974, just as the new surge in turboprops started, the Cheyenne is a product of proven airframe and powerplant technology that dates back to the mid 1960s.

A piston-engined version of the turbine Cheyenne I known as the Mojave was introduced but production ceased that same year after only 50 had been completed.

The first of these models to be marketed was the Cheyenne in 1974 (renamed the Cheyenne II in 1978) when a simplified version known as the Cheyenne I was introduced. Seventeen of the 1983 Cheyenne IA were built.

Production of the PA-31P Pressurized Navajo ended during 1977, at which time a total of 248 had been built, but at the same time the company introduced a new version of the Cheyenne, the PA-31T-1 Cheyenne I, the original Cheyenne then becoming redesignated PA-31T Cheyenne II. Deliveries of the new Cheyenne I, which differed primarily from its predecessor by having 373kW Pratt & Whitney Aircraft of Canada PT6A-11 turboprop engines, began towards the end of April 1978.

When Piper mated the 680 hp Pratt & Whitney PT6A 28 with the airframe of their pressurized Navajo, they produced a turboprop that had an instant heritage. The PT6A 28, which is derated to 620 hp in the Cheyenne II so that takeoff power can be maintained up to 4,800 feet, also powers three models of the King Air. Because of its long and reputable service record, the PT6A 28 is authorized to operate 3,500 hours between overhauls in the Cheyenne. That figure was stipulated principally because Pratt & Whitney felt that the 6,500 hour TBO authorized for commuter aircraft, such as the Beech 99 and the Twin Otter, would allow too long a calendar time between internal inspections, considering that typical business aircraft in the Cheyenne class fly about 600 hours per year.

Since the Cheyenne uses the fuselage design of the pressurized Navajo, the reliability of the pressure vessel and its environmental units (35,000 BTU heater, 23,000 BTU vapor cycle air conditioning system and dehumidifier) has been established, and that should mean reduced maintenance worries for the Cheyenne owner. Furthermore, pressurizing a turboprop is less complicated than is pressurizing a turbosupercharged aircraft, because high pressure bleed air from the engine’s compressor can be mixed with the cool outside air to produce the desired pressure differential, which for the Cheyenne is 5.5 psi.

The thirsty turbine powerplants of the Cheyenne necessitated a redesign of the fuel system, and the result was more than just an increased capacity. The Cheyenne’s 382 USG of usable fuel are contained in two multi celled wing tanks one per side. Although each fuel tank consists of four separate but interconnected tanks, the pilot’s fuel control options are reduced to a simple on/ off/cross-feed arrangement. The three fuel cells located within each wing are filled through an opening in each engine nacelle; they must be serviced before the tip tank, which constitutes the fourth fuel cell for each wing. Gravity causes fuel from the 22 USG tip tank to flow into the wing fuel cells. Therefore, opening a nacelle filler cap when the tip tanks are full will result in some spilling, usually on the offending preflighter. However, checking that the tip tanks are full assures that all the cells are topped, and fuel in the neck of the nacelle filler indicates that the corresponding three wing cells are full to their combined capacity of 173 USG.

Installing 1,240 total horsepower in the Pressurized Navajo’s airframe, which was originally designed to accept 850 hp, necessitated either a larger horizontal stabilizer or an innovative redesign of the flight control system if the required stability criteria were to be met. Piper chose the latter course and installed a relatively simple stability augmentation system that varies the tension in the Cheyenne’s elevator downspring as a function of the aircraft’s angle of attack. Although the Cheyenne’s SAS initially caused some consternation among Piper’s salespeople, who were forced to explain why their machine required an operative stability augmentation system to be airworthy while the competition’s aircraft didn’t, the Cheyenne’s SAS has proved to be a successful and cost effective way of engineering a solution to the classic problem of maintaining stability while increasing the horsepower of an existing design. Price 1976: $623,805.

The T-1040 is a turbine powered hybrid combining the fuselage of the Navajo Chieftain with the wing, tail and engines of the Cheyenne 1 A to create a new commuter airliner. Not pressurized, it can carry nine to 11 passengers.

632 of the Cheyenne II were built, including 24 T-1040 airliner versions.

The Cheyenne range was extended for 1981 by introduction of the PA-31T-2 Cheyenne IIXL, with the fuselage lengthened by 0.61m and 559kW Pratt & Whitney Aircraft of Canada PT6A-135 engines flat-rated to 462kW.

Schafer Aircraft Modifications Inc was founded 1977, and from 1979 developed modifications for other aircraft. Included was installing higher rated turboprops to Piper Cheyenne II as the Schafer Comanchero 750.

Certification:
FAA A8EA
PA-31T & PA-31T3
31T-740002 to
31T-7620057
31T-7720001 to
31T-7920094
31T-8275001 and up

Gallery

Specifications:

PA-31T
Engines: 2 x PW PT5A-28, 620 shp
Wingspan over tip tanks: 42 ft 8.75 in / 13.02 m
Length: 34 ft 8 in / 13.02 m
Empty weight: 4870 lb / 2209 kg
MTOW: 9000 lb / 4082 kg
Max cruise at 11000 ft / 3350m at 7600lb/3447kg: 283 kt / 326 mph / 525 kph
Econ cruise at 25000 ft / 7620m at 7600lb/3447kg: 184 kt / 212 mph / 341 kph
Max ROC SL: 2800 fpm / 853 m/min
Service ceiling: 29,000 ft / 8840 m
Range max fuel 45min res: 1350 nm / 1555 mi / 2500 km
Seats: 8
Cabin length: 16 ft 1 in / 4.90 m
Cabin width: 4 ft 3 in / 1.30 m
Cabin height: 4 ft 4 in / 1.31 m
Cabin volume: 244 cu ft / 6.91 cu.m
Front baggage compartment: 20 ft ft / .057 cu.m / 200 lb / 90.7 kg
Rear baggage compartment: 22 cu.ft / 0.62 cu.m / 200 lb / 90.7 kg

PA-31T-500T1 Cheyenne I
First built: 1978
Engines: 2 x P&W PT6A-11, 500 shp
Props: Hartzell 3-blade, 93-in
Seats: 7
Length: 34.7 ft
Height: 12.8 ft
Wingspan: 40.7 ft
Wing area: 229 sq.ft
Wing aspect ratio: 7.2
Maximum ramp weight: 8750 lb
Maximum takeoff weight: 8700 lb
Standard empty weight: 4904 lb
Maximum useful load: 3843 lb
Zero-fuel weight: 7200 lb
Maximum landing weight: 8700 lb
Wing loading: 38 lbs/sq.ft
Power loading: 8.7 lbs/hp
Maximum usable fuel: 2559 lb
Best rate of climb: 1750 fpm
Service ceiling: 28,200 ft
Max pressurisation differential: 5.5 psi
8000 ft cabin alt @: 25,000 ft
Maximum single-engine rate of climb: 413 fpm @ 110 kt
Single-engine climb gradient: 225 ft/nm
Single-engine ceiling: 12,500 ft
Maximum speed: 243 kt
Normal cruise @ 24,000ft: 234 kt
Fuel flow @ normal cruise: 412 pph.
Endurance at normal cruise: 5.5 hr
Stalling speed clean: 84 kt
Stalling speed gear/flaps down: 72 kt
Turbulent-air penetration speed: 180 kt

Cheyenne IA
Engines: two 500hp P&W PT6A
Wingspan 42’8″
Length: 34’8″
Useful load: 3846 lb
Cruise: 296 mph
Stall:83 mph
Ceiling: 29,000′
Price: $1,124,117

PA-31T-620 Cheyenne II
First built: 1974
Engines: 2 x P&W PT6A-28, 620 shp
TBO: 3,500 hr
Props: Hartzell 3-blade, constant speed reversing and full feathering, 93-in
Seats: 8
Length: 34 ft. 8 in
Height: 12 ft. 9 in
Wingspan: 42 ft. 8 in / 13.01 m
Wing area: 229 sq.ft / 21.3 sq.m
Airfoil: NACA 632-415 at root, 63A212 at tip
Aspect ratio: 7.96
Maximum ramp weight: 9050 lb
Maximum takeoff weight: 9000 lb
Empty weight: 5,331 lb
Useful load: 3,719 lb
Payload with full fuel: 1,427 lb
Ramp weight: 9,050 lb
Zero-fuel weight: 7200 lb
Maximum landing weight: 9000 lb
Wing loading: 39.3 lbs/sq.ft
Power loading: 7.26 lb/hp
Usable fuel capacity: 382 USG/2,292 lb
Baggage capacity: 400 lb
Baggage area: 42 cu.ft
Best rate of climb: 2710 fpm
Certificated ceiling: 31,600 ft
Service ceiling: 29,000 ft
Single engine service ceiling: 14,600 ft
Max pressurisation differential: 5.5 psi
8000 ft cabin alt @: 25,000 ft
Maximum single-engine rate of climb: 660 fpm @ 113 kt
Single-engine climb gradient: 350 ft/nm
Maximum speed: 283 kt
Maximum cruise (@ 11,000 ft.): 279 kt
Economy cruise (@ 25,000 ft.): 212 kt
Range @ maximum cruise (45 min res). 883 nm
Range @ economy cruise (45 min res): 1,350 nm
Normal cruise @ 24,000ft: 248 kt
Fuel flow @ normal cruise: 454 pph
Endurance at normal cruise: 5.1 hr
Stall speed (clean): 89 kt
Stall speed (gear, flaps down): 77 kt
Turbulent-air penetration speed: 180 kt
Minimum runway requirement: 2,480 ft.

PA-31T-2XL620 Cheyenne IIXL
First built: 1981
Engines: 2 x P&W PT6A-135, 620 shp
Props: Hartzell 3-blade, 93-in
Seats: 6/8
Length: 36.7 ft
Height: 12.8 ft
Wingspan: 42.7 ft
Wing area: 222 sq.ft
Wing aspect ratio: 8
Maximum ramp weight: 9540 lb
Maximum takeoff weight: 9474 lb
Standard empty weight: 5112 lb
Maximum useful load: 4428 lb
Zero-fuel weight: 7600 lb
Maximum landing weight: 9000 lb
Wing loading: 41.4 lbs/sq.ft
Power loading: 7.6 lbs/hp
Maximum usable fuel: 2292 lb
Best rate of climb: 1750 fpm
Service ceiling: 30,000 ft
Max pressurisation differential: 5.5 psi
8000 ft cabin alt @: 25,000 ft
Maximum single-engine rate of climb: 470 fpm @ 122 kt
Single-engine climb gradient: 231 ft/nm
Single-engine ceiling: 14,900 ft
Maximum speed: 276 kt
Vmca: 91 kt
Normal cruise @ 29,000ft: 246 kt
Fuel flow @ normal cruise: 394 pph
Endurance at normal cruise: 5.3 hr
Stalling speed clean: 89 kt
Stalling speed gear/flaps down: 80 kt
Turbulent-air penetration speed: 187 kt

PA31 T-1020 Commuter
First built: 1981
Engine: 2 x Lycoming TIO-540, 350 hp
TBO: 1800 hr
Prop: Hartzell 3 blade, constant speed 80 in
Seats: 11
Length: 34.6 ft.
Height: 13 ft
Wingspan: 40.7 ft
Wing area: 229 sq.ft
Wing aspect ratio: 7.2
Max ramp wt: 7045 lb
Max take off wt: 7000 lb
Standard empty wt: 4450 lb
Max useful load: 2550 lb
Max landing wt: 7000 lb
Wing loading: 30.6 lbs/sq.ft
Power loading: 10 lbs/hp
Max useable fuel: 636 lb
Climb rate: 1120 fpm @ 101 kt
Climb gradient: 665 ft/nm
Rate of climb @ 8000 ft: 950 fpm
Certificated ceiling; 24,000 ft
SE rate of climb: 230 fpm @ 106 kt
SE climb gradient: 128 ft/nm
SE ceiling: 13,700 ft
Max speed: 231 kt
Cruise @ 65% power @ 8,000ft: 181 kt
Fuel flow @ 65% power @ 8,000ft: 185 pph
Endurance @ 65% power @ 8,000ft: 3.2 hr
Stalling speed clean: 77 kt
Stall speed gear/flaps down: 74 kt
Turbulent air penetration speed: 160 kt
Retractable undercarriage
Cabin length: 12 ft 7 in
Cabin width: 50 in
Cabin height: 51.5 in
Cabin floor area: 45.4 sq.ft
Cabin volume: 203 cu.ft
Cabin door: 46 in x 27.5 in
Opt. utility door: 38 in x 17.5 in
Nose baggage: 17 cu.ft
Nacelle lockers: 13.25 cu.ft each
No built: 21

T-1020
Max speed: 272 mph
Cruise 10,000ft: 231 mph
Cruise 10,000ft eco: 196 mph
Stall: 85 mph
Climb rate: 1120 fpm
Climb rate SE: 230 fpm
Service ceiling: 24,000 ft
SE service ceiling: 12,100 ft
Takeoff run: 1850 ft
Takeoff run to 50 ft: 2400 ft
Landing run 50ft: 1680 ft
Range loaded: 558 mi
Fuel capacity: 108 USG
Fuel capacity opt: 182 USG
Wingspan: 40 ft 8 in
Length: 34 ft 7.5 in
Height: 13 ft 0in
Wing area: 229 sq.ft
Empty weight: 4450 lb
Loaded weight: 7000 lb
Max baggage weight: 700 lb

T-1040 / PA-31-T3
Engine: 2 x Pratt & Whitney PT6A-11, 500 shp
Props: Hartzell CS, fully feathering 7 ft 9 in
Wingspan: 41 ft 1 in
Wing area: 229 sq.ft
Wing aspect ratio: 7.4
Length: 36 ft 8 in
Height: 13 ft 0in
Maximum ramp weight: 9050 lb
Maximum takeoff weight: 9000 lb
Standard empty weight: 4624 lb
Maximum useful load: 2976 lb
Zero-fuel weight: 7600 lb
Maximum landing weight: 9000 lb
Wing loading: 39.3 lbs/sq.ft
Power loading: 9 lbs/hp
Fuel capacity: 300 USG
Fuel capacity opt: 66 USG
Tip tank capacity; 336 USG
Maximum usable fuel: 2010 lb
Max baggage weight: 700 lb
Max speed: 280 mph / 243 kt
Cruise 11,000ft: 272 mph / 236 kt
Fuel flow @ normal cruise: 580 pph
Endurance at normal cruise: 3.7 hr
Cruise 11,000ft eco: 230 mph
Stall clean: 90 mph / 88 kt
Stalling speed gear/flaps down: 78 kt
Turbulent-air penetration speed: 183 kt
Climb rate: 1610 fpm
Climb rate SE: 325 fpm @ 115 kt
Single-engine climb gradient: 169 ft/nm
Service ceiling: 27,900 ft
Single-engine ceiling: 12,100 ft
Takeoff run to 50 ft: 2650 ft
Landing run 50ft: 2100 ft
Range loaded: 680 mi
Range opt: 1150 mi
Nose baggage: 25.0 cu.ft
Nacelle lockers: 9.0 cu.ft each
Seats: 11

PA-31T
Piper PA-31T Cheyenne II / T-1020 / T-1040

Piper PA-31 Navajo / Chieftain / Embraer EMB-820 / Schafer Comanchero / Neiva NE-821 Caraja / Chincul PA-31 Navajo

PA31-350 Navajo

On 30 September 1964 Piper flew the prototype of a new twin-engine executive aircraft which was then the largest built by the company. Identified at first as the Piper PA-31 Inca, the aircraft had been redesignated as the PA-31 Navajo when deliveries began on 17 April 1967.

Piper PA-31 Navajo / Chieftain Article

A six/eight-seat corporate/ commuter transport of cantilever low-wing monoplane configuration with retractable tricycle landing gear, it was powered by two 224kW Avco Lycoming IO-540-K flat-six engines, and was available in optional Standard, Commuter and Executive versions with differing interior layouts.

The internal cabin is 15 ft 10in long and 51.5in high and a nose baggage compartment has 14 cu.ft for 150 lb of luggage, and the aft compartment has 16 cu.ft for 200 lb.

The Standard version has accommodation for six passengers, rear baggage compartment, wardrobe and optional seating arrangements for seven or eight, plus a toilet.

The Executive and VIP version accommodates six passengers, with a pilot/passenger divider, curtained off area, refreshment unit, foldaway tables and a toilet, plus the optional seventh or eighth seat.

The Commuter version accommodates eight passengers, with a curtain divider, foldaway tables, refreshment unit, magazine racks, fasten seatbelts and no smoking signs, plus a luggage capacity of 350 lb.

Piper PA31 Navajo Owner’s Handbook

Made available at the same time was the optional PA-31T Turbo Navajo, which differed only by having two 310 hp /231kW TIO-540-A turbocharged engines.

In 1974 an additional model of the Turbo Navajo was made available, the PA-31-325 Turbo Navajo C/R, which introduced a 242kW version of the counter-rotating engines installed in the Chieftain.

The Turbo Navajo B, cruising at 251 mph at 24,000 feet (404 km/h at 7000 meters); 223 mph at 12,000 feet (359 km/h at 3600 meters), featured new nacelle compartments increased luggage space 42 percent – 62 cubic feet (1.76 cu.m) and hold an additional 300 pounds (136 kg) total 650 pounds (295kg.), seating for up to nine people.

Production of the PA-31 Navajo ended and at the same time the company introduced for 1973 the PA-31-350 Navajo Chieftain which had the fuselage lengthened by 0.61m so an extra pair of seats could be fitted to the cabin, and was powered by two 350 hp / 261kW TIO-540-J2BD turbocharged engines driving counter-rotating propellers.

Piper PA-31-350 Navajo Cheftain

Piper expanded their 1976 medium twin line by offering the Navajo C/R. This airplane has 325 hp engines that eliminate the critical engine characteristics that stem from both propellers rotating in the same direction; the Navajo C/R’s left propeller turns in the conventional clockwise direction, but the right prop rotates counter-clockwise. The Navajo CR had wing lockers.

The basic model remained in production until 1983 by which time 1785 were built. Included in this total were the higher powered (325 hp) models which featured contra-rotating engines.

The engine variations provide the main performance difference among the models. The plain Navajo is a 3500 gross, 2,174 useful airplane, with a 310 hp turbo¬charged but otherwise unfettered TIO 540. The Navajo CR is the same airplane, with the same engine for that matter, except that the horsepower rating has risen to 325, magnetos are pressurized, and the right hand engine turns its propeller inboard, which the left one does anyway. The benefits of counter-rotation are minutely improved single engine performance and speeds, largely theoretical improvement from the neutralization of slipstream and prop wash effects, and the minimization of P factor. Gross weight remains the same, while useful weight drops a tad as a result of the CR’s capacious wing lockers.

The range was extended in 1970 by introduction of the PA-PA-31P Pressurized Navajo (First flying in March 1968) with a fail-safe fuselage structure in the pressurised section and two 317kW Avco Lycoming TIGO-541-E1A engines. The pressurised PA31P seated six was marketed for business high-fliers: 259 were built from 1970 till 1977.

PA-31P

The Chieftain is 24 inches longer than the CR, has a 7,000 gross and a 350 pound greater useful and the same engine. But horsepower has now been boosted to 350 with a tuned induction system and a slightly larger compressor.

One hundred and sixty seven Navajo Chieftains were licence built in Brazil by Embraer circa 1981, as the EMB-820.

Fifty Embraer EMB-820C Navajos were converted to turboprop configuration with Pratt & Whitney Canada PT6A-27 engines flat-rated to 550shp, being named Neiva NE-821 Caraja. The Carajá’s MTOW of 8,003 pounds (3,630 kg) was 1,000 pounds (454 kg) more than that of the Chieftain.

Neiva NE-821 Caraja

In 1984 a piston-engined version of the turbine Cheyenne I known as the PA31P-350 Mojave was intro-duced but production ceased that same year after only 50 had been completed. It incorporated the Chieftain II wings, pressurised Cheyenne I fuselage, and a Chieftain tail, with the powerplant of the PA-315-350 Chieftain. With increased wingspan and fuel capacity, plus airstairs, production of the PA-31P Pressurized Navajo ended during 1977, at which time a total of 248 had been built.

Schafer Aircraft Modifications Inc was founded 1977, and from 1979 developed modifications for other aircraft. Included were installing turboprop engines to Piper Navajo as the Schafer Comanchero, turboprop engines to Piper Chieftain as the Comanchero 500.

Chincul SACAIFI manufactured aircraft under license from Piper Aircraft Corporation. The company was a wholly owned subsidiary of “La Macarena S.A.”, Piper’s Argentine agent. Production included Piper PA-31 Navajo.

Production of the PA-31 Navajo started in 1973 and, after 1825 were built, ceased in 1983.

Gallery

Certification:

FAA A20SO
PA-31
31-1 to 31-659
31-661 to 31-711
31-752 to 31-7612110
31-7712001 to 31-7912124
31-8012001 to 31-8312019

FAA A20SO
PA-31-325
31-7300932 to 31-7612110
31-7712001 to 31-7912124

FAA A20SO
PA-31-350
31-5000 to 31-7652176
31-7752001 to 31-7952250

FAA A8EA
PA-31P
31P-1 to 31-7630019

FAA A8EA
PA-31P-350
31P-8414001 to 8414050

Specifications:

PA31-300 Navajo
Engine: 2 x Lycoming IO-470-M, 300 hp

PA31-310 Navajo
First built: 1967
Engine: 2 x Lycoming TIO-540-A2C, 310 hp
TBO: 1800 hrs
Fuel; 100/100LL
Prop: Hartzell 3 blade, constant speed 80 in
Seats: 6/8
Length: 32.6 ft
Height: 13 ft
Wingspan: 40.7 ft
Wing area: 229 sq.ft
Wing aspect ratio: 7.2
Max ramp wt: 6536 lbs
Max take off wt: 6500 lbs
Standard empty wt: 4003 lbs
Equipped Weight; 4529 lbs
Max useful load: 2533 lbs
Max landing wt: 6500 lbs
Payload full std Fuel; 1650 lbs
Baggage Capacity; 350 lbs
Wing loading: 28.4 lbs/sq.ft
Power loading: 10.5 lbs/hp
Fuel Capacity; 192 US gals
Usable Fuel; 187.3 US Gals / 1124 lb
Climb rate: 1300 fpm @ 94 kt
Climb gradient: 830 ft/nm
Rate of climb @ 8000 ft: 1220 fpm
Best Angle of Climb; 80 mph
Absolute Ceiling; 27,300 ft
Certificated ceiling; 24,000 ft
SE rate of climb: 245 fpm @ 94 kt
SE climb gradient: 157 ft/nm
SE ceiling: 15,200 ft
Max speed: 227 mph
Never exceed ; 236 mph
Cruise @ 65% power @ 8,000ft: 176 kts
Cruise @ 65% pwr @ 18,000 ft: 192 kts
Cruise 75% 22,000 ft Best Power: 213 mph
Cruise 75% 22,000 ft Best Economy: 208 mph
Cruise 65% 24,000 ft Best Power: 202 mph
Cruise 65% 24,000 ft Best Economy: 196 mph
Cruise 55% 24,000 ft Best Power: 182 mph
Cruise 55% 24,000 ft Best Economy: 171 mph
Max Range (with res) 75% 22,000 ft Best Power: 870nm
Max Range (with res) 75% 22,000 ft Best Economy: 1005 nm
Max Range (with res) 65% 24,000 ft Best Power: 910 nm
Max Range (with res) 65% 24,000 ft Best Economy: 1052 nm
Max Range (with res) 55% 24,000 ft Best Power: 922 nm
Max Range (with res) 55% 24,000 ft Best Economy: 1068 nm
Fuel Consumption 75% Best Power: 37.5 US gph
Fuel Consumption 75% Best Economy: 29.7 US gph
Fuel Consumption 65% Best Power: 33.0 US gph
Fuel Consumption 65% Best Economy: 26.0 US gph
Fuel Consumption 55% Best Power: 28.7 US gph
Fuel Consumption 55% Best Economy: 22.7 US gph
Fuel flow @ 65% power @ 18,000ft: 172 pph
Endurance @ 65% power @ 18,000ft: 6.3 hr
Stalling speed clean: 78 kt
Stall speed gear/flaps down: 74 kt
Turbulent air penetration speed: 159 kt
Retractable undercarriage
Trims; Elevator, Rudder, Aileron
Min Control (Vmc); 74 mph
Take-off Ground Run; 1720 ft
Take-off 50ft; 2290 ft
Landing 50 ft; 1521 ft
Accelerate/stop; 2450 ft

PA31-325 Navajo C/R
First built: 1975
Engine: 2 x Lycoming TIO-540-F2BD, 325 hp
TBO: 1600 hr
Prop: Hartzell 3 blade, constant speed 80 in
Seats: 6/8
Length: 32.6 ft
Height: 13 ft
Wingspan: 40.7 ft
Wing area: 229 sq.ft
Wing aspect ratio: 7.2
Max ramp wt: 6540 lb
Max take off wt: 6500 lb
Standard empty wt: 4099 lb
Max useful load: 2441 lb
Max landing wt: 6500 lb
Wing loading: 28.4 lbs/sq.ft
Power loading: 10 lbs/hp
Max useable fuel: 1425 lb
Climb rate: 1220 fpm @ 100 kt
Climb gradient: 720 ft/nm
Rate of climb @ 8000 ft: 1100 fpm
Certificated ceiling; 24,000 ft
SE rate of climb: 255 fpm @ 97 kt
SE climb gradient: 157 ft/nm
SE ceiling: 15,300 ft
Max speed: 228 kts
Cruise @ 65% power @ 8,000ft: 180 kt
Cruise @ 65% pwr @ 18,000 ft: 196 kt
Fuel flow @ 65% power @ 18,000ft: 195 pph
Endurance @ 65% power @ 18,000ft: 7.1 hr
Stalling speed clean: 72 kt
Stall speed gear/flaps down: 70 kt
Turbulent air penetration speed: 159 kt
Retractable undercarriage and counter-rotating prop

PA31-350 Navajo Chieftain
Engine: 2 x Lycoming TIO-540-J2BD, 350 hp
TBO: 1600 hr
Prop: Hartzell 3 blade, constant speed 80 in
Seats: 6/10
Length: 34.6 ft
Height: 13 ft / 3.96 m
Wingspan: 41 ft 8 in / 12.4 m
Wing area: 229 sq.ft / 21.27 sq.m
Wing aspect ratio: 7.2
Max ramp wt: 7045 lb
Max take off wt: 7000 lb / 3175 kg
Standard empty wt: 4421 lb
Max useful load: 2824 lb
Max landing wt: 7000 lb
Wing loading: 30.6 lbs/sq.ft
Power loading: 10 lbs/hp
Max useable fuel: 1416 lb
Climb rate: 1120 fpm @ 101 kt
Climb gradient: 665 ft/nm
Rate of climb @ 8000 ft: 980 fpm
Certificated ceiling; 24,000 ft / 7315 m
SE rate of climb: 230 fpm @ 106 kt
SE climb gradient: 130 ft/nm
SE ceiling: 13,700 ft
Max speed: 231 kt / 428 km/h / 266 mph
Cruise @ 65% power @ 8,000ft: 181 kt
Cruise @ 65% pwr @ 18,000 ft: 197 kt
Fuel flow @ 65% power @ 18,000ft: 185 pph
Endurance @ 65% power @ 18,000ft: 7.4 hr
Stalling speed clean: 77 kts
Stall speed gear/flaps down: 74 kts
Turbulent air penetration speed: 162 kt
Retractable undercarriage

PA31P
Engines Lycoming TIGO-541 ElA, 425 hp
TBO 1,200 hr
Propellers Hartzell three blade, constant speed, full feathering, 93 in. dia
Length 34 ft. 6 in
Height 13 ft. 3 in
Wingspan 40 ft. 8 in
Wing loading 34.1 lbs./sq.ft
Seats 6/8
Empty weight 5,611 lb
Useful load 2,189 lb
Payload with full fuel 773 lb
Gross weight 7,800 lb
Power loading 9.18 lbs./hp
Fuel capacity, equipped 236 USG/1,416 lb
Baggage area 42 cu. Ft
Minimum runway requirement 2,700 ft
Rate of climb 1,740 fpm
Single engine rate of climb 240 fpm
Single engine service ceiling 12,100 ft
Maximum speed 280 mph/243 kt
Endurance, maximum cruise (incl. allowance for climb) 4 hr
Normal cruise (@ 24,000 ft.) 244 mph/212 knots
Endurance, normal cruise (incl. allowance for climb) 5 hr
Long range cruise (@) 24,000 ft.) 222 mph / 193 kt
Endurance, long range cruise (incl. allowance for climb) 6.3 hrs
Stall speed (clean) 92 mph/80 knots
Stall speed (gear, flaps down) 83 mph/72 knots

PA31P-350 Mojave
Engines: 2 x Lycoming TIO-540-V2AD, 350 hp
Props: Hartzell 3 blade CS 6ft 8in
Wingspan: 44 ft 6 in
Length: 34 ft 6 in
Height: 13 ft 0 in
Wing area: 237 sq.ft
Max speed: 278 mph
Cruise eco: 224 mph
Cruise norm: 270 mph
Stall: 83 mph
ROC: 1220 fpm
Service ceiling: 30,400 ft
SE service ceiling: 14,300 ft
TO run: 1625 ft
TO to 50ft: 2469 ft
Ldg from 50 ft: 2300 ft
Ldg run: 1390 ft
Range loaded: 679 mi
Range normal: 1280 mi
Range econ: 1405 mi
Pressure differential: 5.2 lb
Empty weight: 5065 lb
Loaded weight: 7200 lb
Useful load: 2516 lb
Fuel capacity: 243 USG
Cabin: 14 ft 5.75 in x 50 in x 51.5 in high
Left rear cabin door: 46in x 28in
Cabin baggage: 22 cu.ft
Nose baggage: 22.5 cuf.t
Nacelle lockers: 18 cu.ft
Seats: 7

EMB-820C Navajo Chieftain

Piper PA-31 Navajo
PA31P-350 Mojave

Piper PA-30 Twin Comanche

The Twin Comanche was a derivative of the single engine Comanche and was introduced in 1963 as a replacement for the Apache H. Little was done to the original Comanche fuselage when it was adapted for use in the Twin Comanche in order to simplify tooling and assembly operations. A cantilver low-wing monoplane with retractable tricycle landing gear and powered by two 160 hp / 119kW Avco Lycoming IO-320-B engines.

First flown in 7 November 1962, then production form flew on 3 May 1963, the PA-30 was superseded in 1965 by an improved four/six-seat PA-30B-160 Twin Comanche, and made available also at the same time was the PA-30B Turbo Twin Comanche with Rayjay-turbocharged IO-320-C1A engines.

In total 2,001 were built.

Delivering the first Twin Comanche to Europe in September 1963, Max Conrad spanned the 2100 miles from Gander to Shannon in 9 hr 21 min averaging 206 mph, at 50% power, burning 11 USG/hr. The co-pilot was Winston S. Churchill, 22 year old grandson of Sir Winston Churchill.

The PA-30 was offered in four models: Standard, Custom, Sportsman, and Turbo. The latter differed in engine power, and the rest contained different interior appointments, electronics, and instrumentation.

Both were replaced in 1970 by generally similar versions which introduced a powerplant with counter-rotating propellers. Designated PA-39 Twin Comanche C/R and PA-39 Turbo Twin Comanche C/R, manufacture of these two models ended in 1972, when total production of all versions amounted to 2,142. Piper announced the end of PA-30 production in 1970 and introduced a new PA-39 line.

Certification was under FAA A1EA.

One of these aircraft was used by Max Conrad to establish a new world class distance record when he flew non-stop from Cape Town, South Africa, to St Petersburg, Florida, during 24-26 December 1964. The distance of 12,678.83km remained a record in its class in 1993.

Its responsive handling earned it an airworthiness directive that raised Vmc from 70 to 78 knots.

The Super Twin Comanche was “Kind of a nice little bomb,” Pug muses, recalling the time he put two 300 hp Lycomings on the little Twin Comanche, almost doubling its horsepower. Even Piper, however, seriously questioned whether an airframe originally developed to hold a single four cylinder, 180 hp engine was quite ready for 12 jugs and 600 horses.

Piper PA-30 1964 Twin Comanche
Engine: Lycoming IO-320-B1A, 160 hp
TBO: 2000 hr
Fuel type: 100LL
Propeller: Hartzell two-blade CS
Landing gear type: Tri/Retr.
Max ramp weight: 3600 lb
Max gross weight: 3600 lb
Max takeoff weight: 3600 lb
Empty weight: 2160 lb
Max landing weight: 3600 lb
Useful load, std: 1390 lb
Payload, full std. fuel: 900 lb
Usable fuel, std: 86 USgal
Wingspan: 36 ft. 0 in
Overall length: 25 ft. 2 in
Height: 8 ft. 3 in
Wing area:178 sq. ft
Wing loading: 19.56 lbs./sq. ft
Power loading: 11.25 lbs./hp
Wheel base: 7 ft. 4 in
Wheel track: 9 ft. 10 in
Wheel size, mains: 6.00 x 6
Wheel size, nose: 6.00 x 6
Seating capacity: 4
Cabin doors: 1
Cabin width: 44 in
Cabin height: 46 in
Baggage capacity: 200-250 lb
Cruise speed 75% power @ 8,000 ft: 168
Cruise speed 65% power @ 12,000 ft: 161 kt
Cruise speed 55% power @ 14,000 ft: 148 kt
Max range (w/ res) 75% power @ 8,000 ft.: 823 nm
Max range (w/ res) 65% power @ 12,000 ft.: 890 nm
Max range (w/ res) 55% power @ 14,000 ft.: 970 nm
Fuel consumption 75% power: 17.2 USgph
Fuel consumption 65% power: 15.2 USgph
Fuel consumption 55% power: 13.4 USgph
Stall speed (gear, flaps down, power off): 66 kt
Stall speed (gear, flaps down, power on): 60 kt
Best rate of climb: 1460 fpm
Service ceiling: 18,600 ft
Takeoff ground roll: 950 ft
Takeoff over 50-ft. obstacle: 1530 ft
Landing ground roll: 1215 ft
Landing over 50-ft. obstacle: 1875 ft
Service ceiling: 18,600 ft
Single-engine service ceiling: 6600 ft
Takeoff ground roll: 950 ft
Takeoff over 50-ft. obstacle: 1570 ft
Landing ground roll: 700 ft
Landing over 50-ft. obstacle: 1875 ft

PA-30B Twin Comanche B
1965
Engines: 2 x160hp Lycoming IO-320-B
Wingspan: 36’0″
Length: 25’2″
Useful load: 1440 lb
Max speed: 205 mph
Cruise: 194 mph
Stall: 65 mph
Range: 948-1200 mi
Seats: 5

PA-30C Twin Comanche C
1968
Engines: 2 x 160hp TSIO-320-C1A

1966 PA-30B Turbo Twin Comanche
Engine: Lycoming IO-320-CIA, 160 hp
TBO: 1800 hr
Propeller: Const. spd.
Landing gear: Tri/Retr.
Gross weight: 3725 lb
Empty weight, std: 2408 lb
Useful load, std: 1317 lb
Fuel: 120 USgal
Wingspan: 36 ft
Overall length: 25 ft. 2 in
Height: 8 ft. 2 in
Wing area: 178 sq. ft
Seating capacity: 4
Cabin width: 44 in
Cabin height: 46 in
Baggage capacity: 250 lb
Cruise speed 75% power: 194 kt
Cruise speed 65% power: 179 kt
Max range (w/ res) 75% power: 812 nm
Max range (w/ res) 65% power: 948 nm
Fuel consumption 75% power: 17.2 USG
Fuel consumption 65% power: 14.9 USG
Stall speed (gear, flaps down): 60 kt
Best rate of climb: 1460 fpm
Service ceiling: 30,000 ft
Takeoff ground roll: 950 ft
Landing ground roll: 1700 ft

1969 Piper Twin Comanche
Engine: Lycoming IO-320-B1A, 160 hp @2700 rpm
TBO: 2000 hr
Fuel type: 100/100LL
Propeller: CS
Landing gear: Tri/Retr.
Max ramp weight: 3600 lb
Gross weight: 3600 lb
Landing weight: 3600 lb
Empty weight, std: 2210 lb
Useful load, std: 1390 lb
Payload, full std. fuel: 850 lb
Usable fuel: 90 USG
Optional fuel – std. (tip tanks): 120 USG
Oil capacity: 8 qt
Wingspan: 36 ft
Overall length: 25 ft. 2 in
Height: 8 ft. 3 in
Wing area: 178 sq. ft
Wing loading: 20.2 lbs./sq. ft
Power loading: 11.3 lbs./hp
Wheel base: 7 ft. 3 in
Wheel track: 9 ft. 10 in
Wheel size: 6.00 x 6
Seating capacity: 4-6
Cabin doors: 1
Cabin width: 44 in
Cabin height: 46 in
Baggage capacity: 250 lb
Cruise speed 75% power @ 8,000 ft: 169 kt
Cruise speed 65% power @ 12,000 ft: 162 kt
Cruise speed 55% power @ 10,000 ft: 144 kt
Max range (w/100 nm reserve) 75% power: 724 nm
Max range (w/100 nm reserve) 65% power: 791 nm
Fuel consumption (@ .42 lbs./hp/hr. sfc) 75% power: 16.8 USgph
Fuel consumption (@ .42 lbs./hp/hr. sfc) 65% power: 14.6 USgph
Fuel consumption (@ .42 lbs./hp/hr. sfc) 55% power: 12.3 Usgph
Vs: 66 kt
Vso: 60 kt
Best rate of climb (SL): 1460 fpm

PA-30C Turbo Twin Comanche C
Engines: 2 x IO-320-C1A

Miller Twin Commanche 200 / Piper Twin Commanche
Engines: 2 x Lycoming IO-360-C1C, 200 hp
Seats: 6
Wing loading: 20.2 lb/sq.ft
Pwr loading: 9.5 lb/hp
Max TO wt: 3780 lb
Empty wt: 2366 lb
Equipped useful load: 1315 lb
Payload max fuel: 403 lb
Range max fuel 75% cruise: 1353 nm/7.1 hr
Range max fuel / 55% cruise: 1455 nm/ 8 hr
Service ceiling: 21,000 ft
Max cruise: 191 kt
55% cruise: 183 kt
Vmc: 72 kt
Stall: 60-66 kt
1.3 Vso: 78 kt
ROC: 1900 fpm
SE ROC: 500 fpm @ 91 kt
SE ceiling: 11,500 ft
Min field length: 1875 ft
Fuel cap: 504/912 lb

Miller Turbo Twin Commanche 200
Engines: 2 x Lycoming IO-360-C1F, 200 hp
Seats: 6
Wing loading: 20.2 lb/sq.ft
Pwr loading: 9.5 lb/hp
Max TO wt: 3780 lb
Empty wt: 2406 lb
Equipped useful load: 1275 lb
Payload max fuel: 363 lb
Range max fuel/ 75% cruise: 1332 nm/5.9 hr
Range max fuel / 55% cruise: 1587 nm/ 7.5 hr
Service ceiling: 30,000 ft. 75% cruise: 226 kt
55% cruise: 213 kt
Vmc: 72 kt
Stall: 60-66 kt
1.3 Vso: 78 kt
ROC: 1900 fpm
SE ROC: 500 fpm @ 105 kt
SE ceiling: 22,000 ft
Min field length: 1875 ft
Fuel cap: 504/912 lb

Piper PA-28 Cherokee / Warrior / Archer / Pathfinder / Embraer EMB-710 Carioca / Embraer EMB-712 Tupi

PA28-181 Archer II

The original concept of a modem, metal, low wing replacement for the high wing, fabric Tri Pacer came from Fred Weick but it was left to John Thorp to design the PA-28.

Piper first flew the prototype of the four-seat Piper PA-28-150 Cherokee sporting/training monoplane on 14 January 1960. The type started life as a cantilever low-wing monoplane of all-metal construction with fixed tricycle landing gear and four-seat accommodation in an enclosed cabin, with power provided by a 150 hp / 112kW Avco Lycoming O-320.

The first production Cherokee was flown on 10 February 1961 (TC 2A13), and the type was available from the beginning in Standard, Custom, Super Custom and AutoFlite models, and a scheme of optional models. 6,442 of the -140 and -140-4 Cherokee were built.

Initial Cherokees were either 150 hp or 160 hp models, with the 160 hp / 119kW O-320-B2B in the PA-28-160 Cherokee.

There are few Cherokee 150s around, since Piper produced only 300 of them. Without a contender in the trainer arena, the solution was a de-rated Cherokee 150. A change of propeller pitch converted it from a 150 hp, 2,700rpm family machine into a 140 hp, 2,450 rpm trainer. The rear seats were removed, and the list price was lowered from $13,700 to $10,700. Thus, the Cherokee 140 was born.

PA28-140

But Piper soon discovered that a substantial number of customers liked the idea of being able to carry two additional passengers. Beginning with the 1965 model, the company returned the 140’s prop pitch to 2,700 rpm and its horsepower to 150, and installed a pair of detachable rear seats. The new airplane, basically a Cherokee 150, was called the 140 4.

As a two place aircraft, the 140 has a maximum gross weight of 1,950 pounds and is licensed in the utility category, which means it can be spun legally. A kit is available from Piper dealers to convert a two-place 140 into a four seater, although the seats themselves were not included in the kit. The conversion includes a prop change, an increase in gross weight to 2,150 pounds and licensing in the normal category (no spins).

The more powerful 180 hp / 134kW O-320-A2A engine model was introduced in 1962 as the Cherokee B. The lower powered models were phased out in 1967 and the Cherokee 180 D made up the middle of the Cherokee range from then on.

Piper launched a new assault on the 150 in 1971 with the Flite Liner, a bare bones Cherokee 140. Out went the frills and most of the options. Instead of 100 hour inspections, the company recommended a progressive maintenance program, which was supposed to halve hourly shop expenses and greatly reduce out of service time. “Instructional cruise” at 60 percent power, Piper said, would further lower operating costs, with little effect on performance, and it marked the appropriate settings on the power pedestal and tachometer. These measures did indeed result in a more economical competitor that cost $2,300 less to buy then the previous model Cherokee 140. Still, the Flite Liner, and other Cherokee 140 models, never caught up with the Cessna’s popularity.

Piper Charger N2673T

Top of the range was the Cherokee 235 hp version which offered a much better performance and actually had a larger wing than the other models. First flown on 9 May 1962, all told 2822 of these higher-powered Cherokees were built, including 1383 -235 Charger, 712 of the 5 inch longer -235 Charger (re-named Pathfinder in 1974), and 78 of the 235D. The 1963 PA-28-235 had structural strengthening and installation of a 175kW Avco Lycoming O-540-B2B5 flat-six engine for operation at a higher gross weight.

Piper Cherokee 235B N8500W

In 1964 Piper introduced the cheap trainer version known as the Cherokee 140 with the 104kW O-320-A2B. 10,089 Cherokee 140s 150s and 160s were sold from 1964 to 1977.

With introduction of the PA-28-180R Cherokee Arrow on 19 June 1967 came a significant change, with retractable tricycle landing gear, fuel-injection engine and a constant-speed propeller as standard; at this time production of the PA-28-150 and PA-28-160 versions came to an end.

In 1971 new models of the PA-28-140 appeared as the Cherokee Flite Liner, a two-seat trainer for use by Piper-sponsored training schools, and the Cherokee Cruiser 2 Plus 2, which was a de luxe two/four-seat version which in the following year became the standard production model. For 1973 the long-standing PA-28-180 was renamed as the Cherokee Challenger, with slight increases in wing span and fuselage length, and improved interior and standards of equipment; at the same time similar changes were introduced on the PA-28-235 which was renamed as the Cherokee Charger.

In 1974 there came a number of changes in the Cherokee line, the Cherokee 2 Plus 2 being renamed Cherokee Cruiser, the Cherokee Challenger the Cherokee Archer, and the PA-28-235 the Cherokee Pathfinder.

In 1974 the PA-28-151 Cherokee Warrior (160 hp / 112kW O-320-E3D) and PA-28-181 Cherokee Archer (180 hp) models were introduced. They had an entirely new wing with tapered outer wing sections and the lower powered Warrior had the lengthened fuselage of the Archer 180 as well. The max fuel payload of the Archer was increased by 105 pounds. By the Spring of 1974 99 production Warrior had been built.

PA28-151 Cherokee Warrior

In 1977 Piper ended production of the Cherokee Cruiser and Cherokee Pathfinder, but introduced at the same time the PA-28-236 Dakota which, generally similar to the Archer, was powered by the 175kW O-540-J3A5D flat-six engine and had the new wing of increased span.

New from Piper in 1978 was the Dakota (a Cherokee 235 with a Warrior wing and other improvements). A 235-hp single-engine workhorse that should give the Cessna Skylane some direct competition, replacing the Cherokee 235 in 1979. The Dakota is 11 inches longer than the Archer II, and all of the added length is for¬ward of the firewall. The Lycoming six cylin¬der powerplant takes most of the extra space, with some of the space reserved for the enlarged spinner required for the Hart¬zell constant speed propeller. Standard price 1979: $39,910. A total of 851 were built.

In 1978 a version of this aircraft with a 149kW Continental TSIO-360-FB turbocharged engine became available as the PA-28-201T Turbo Dakota, but only limited demand meant that its production ended in 1980.

Production of the Cherokee family continued in the 1980s with the introduction of the PA-28-161 Warrior II with a 119kW Avco Lycoming O-320-D3G engine, alongside the PA-28-181 Archer II with a 134kW Avco Lycoming O-360-A4M. At the higher performance end of the scale the PA-28RT-201T Turbo Arrow IV in corporated the same powerplant as used in the Turbo Dakota. EMBRAER also continued to build aircraft under licence in Brazil. Financial problems and the crisis of product liability acted as a severe brake on sales, but a trickle of late model aircraft continue to be built. By January 1991 2,985 PA-28-161s had been sold along with 9,894 Cherokee 180/ Archers IIs, and small numbers of Arrows and Turbo Arrows.

Certification of all models is under FAA 2A13.

Embraer EMB-712 Tupi was a livence built Piper PA-28-181 Cherokee, with more than 140 units manufactured in Brazil.

The Embraer EMB-710 “Carioca” is a Piper’s Cherokee 235 Pathfinder produced in Brazil by Embraer and later by its subsidiary Neiva, under license from Piper Aircraft during 1975 – 1983. A total of 288 were manufactured.

Embraer EMB-710C Carioca

Equipped with a semi-tapered wing, the single – engine EMB-710 Carioca can reach the speed of 237 km / h with its engine Lycoming of 235 HP (175 kW).

Gallery

In July 1964, Sorenson Aircraft Co, Washington, Minnesota, was marketing a spray rig for all Cherokee models. A fibreglass belly tank was on the centre of gravity, holding 110 USG. The ag unit applied a swath width of up to 45 ft. Cost varied with a variety of pumps and nozzles from US$945-1339.

Sorenson Aircraft spray rig

In 1964 Federal Ski & Engineering, Minneapolis, received FAA approval for aircraft skis to replace wheels on new PA-28-180s and 28-235 Cherokees.

Federal Ski & Engineering equipped PA-28-180

1965 Cherokee PA28-140
Engine make/model: Lycoming O320-E2A, 150 hp @2700 rpm
TBO: 2000 hr
Fuel type: 100/100LL
Propeller: Sensenich Fixed / 74 in
Landing: Tri/Fixed
Max ramp weight: 2150 lb
Gross weight: 2150 lb
Landing weight: 2150 lb
Empty weight, std: 1230 lb
Useful load, std: 920 lb
Payload, full std. fuel: 632 lb
Usable fuel: 48 USgal
Oil capacity: 8 qt
Wingspan: 30 ft
Overall length: 23 ft. 3 in
Height: 7 ft. 3 in
Wing area:160 sq. ft
Wing loading: 13.4 lbs./sq. ft
Power loading: 14.3 lbs./hp
Wheel base: 6 ft. 2 in
Wheel track: 10 ft
Wheel size: 6.00 x 6 in
Seating capacity: 2+2
Cabin doors: 1
Cabin width: 42 in
Baggage capacity: 200 lb
Cruise speed 75% power @ 7,800 ft: 115 kt
Cruise speed 65% power @ 10,200 ft: 108 kt
Cruise speed 55% power @ 12,000 ft: 102 kt
Max range (w/ reserve) 75% power: 470 nm
Max range (w/ reserve) 65% power: 522 nm
Max range (w/ reserve) 55% power: 583 nm
Fuel consumption 75% power: 8.4 USgph
Fuel consumption 65% power: 7.3 USgph
Fuel consumption 55% power: 6.2 USgph
Stall speed (flaps up): 52 kt
Stall speed (flaps down):48 kt
Best rate of climb (SL): 660 fpm
Best rate of climb, 8000ft: 350 fpm
Service ceiling (ft.): 14,300
Takeoff ground roll: 800 ft
Takeoff over 50-ft. obstacle: 1700 ft
Landing ground roll: 495 ft
Landing over 50-ft. obstacle: 850 ft

PA28-140 Cruiser
Engine: 1 x Lycoming O-320-E3D, 150 hp
Prop: 6 ft 2 in (1.88 m) dia 2 blade
Wing span: 30 ft 0 in (9.14 m)
Length: 23 ft 6 in (7.16 m)
Wing area: 160 sq ft (14.86 sq.m)
Seats: 2/4
Wing loading: 13.4 lb/sq.ft
Pwr loading: 14.3 lb/hp
Gross wt: 2150 lb (975 kg)
Empty wt: 1275 lb
Equipped useful load: 834 lb
Payload max fuel: 546 lb
Range max fuel/75% pwr: 597nm/5hr
Range max fuel / 55% pwr: 702 nm/ 7 hr
Service ceiling: 10,950 ft
Max cruising speed: 133 mph (214 kph) at 7,000 ft (2,135 m)
75% cruise: 118 kt
55% cruise: 101 kt
Stall: 41-49 kt
1.3 Vso: 53 kt
ROC: 631 fpm
Min field length: 1700 ft
Fuel cap: 288 lb

PA-28-140 Flightliner

PA-28-150 Cherokee B
Engine: 150hp Lycoming O-320E
Wingspan: 30’0″
Length: 23’4″
Useful load: 830 lb
Max speed: 142 mph
Cruise: 133 mph
Stall: 54 mph
Range: 535 mi
Ceiling: 14,300′.

PA-28-150 Cherokee C
1961-67
Engine: 150hp Lycoming O-320E
Wingspan: 30’0″
Length: 23’4″
Useful load: 830 lb
Max speed: 142 mph
Cruise: 133 mph
Stall: 54 mph
Range: 535 mi
Ceiling: 14,300′.
1900 built

PA-28-150 Cherokee
Engine: 150hp Lycoming O-320-A2A
300 built

PA-28-160 Cherokee C
1970
Engine: 160hp Lycoming O-320-D2A
810 built

PA28-151 Warrior
Engine: 1 x Lycoming O-320-E3D, 150 hp
Wingspan: 35 ft 0 in / 10.67 m
Length: 23 ft 10 in / 7.26 m
Wing loading: 13.7 lb/sq.ft
Pwr loading: 15.5 lb/hp
MTOW: 2325 lb / 1054 kg
Empty wt: 1301 lb / 590 kg
Equipped useful load: 882 lb
Payload max fuel: 594 lb
Fuel cap: 288 lb
Range max fuel/75% pwr: 583nm / 5hr
Range max fuel / 55% pwr: 667 nm/ 7 hr
Service ceiling: 12,700 ft / 3870 m
75% cruise: 115 kt
55% cruise: 96 kt
Stall: 44-51 kt
1.3 Vso: 57 kt
ROC: 649 fpm / 198 m/min
Min field length: 1760 ft
Seats: 4
Cabin length: 9 ft 0 in / 2.74 m
Cabin width: 3 ft 6 in / 1.07 m
Cabin height: 4 ft 0 in / 1.22 m
Cabin volume: 92 cu.ft / 2.61 cu.m
Baggage compartment: 15 cu ft / 0.42 cu.m

PA28-161 Warrior II
First built: 1973
Engine: 1 x Lycoming O-320-D3G, 160 hp
Fuel: 100 Octane
TBO: 2000 hrs
Prop: Sensenich 2 blade, fixed pitch 74 in DM-0-60
Seats: 4
Length: 23.8 ft
Height: 7.3 ft
Wingspan: 35 ft
Wing area: 170 sq.ft
Wing aspect ratio: 7.2
Max ramp wt: 2325 lb
Max take off wt: 2325 lb
Standard empty wt: 1348 lb
Max useful load: 977 lb
Max landing wt: 2325 lb
Wing loading: 13.7 lbs/sq.ft
Power loading: 14.5 lbs/hp
Max useable fuel: 48 USG / 288 lb
Climb rate: 710 fpm @ 75 kt
Climb gradient: 568 ft/nm
Rate of climb @ 8000 ft: 338 fpm
Best angle of climb: 63 kt
Service ceiling; 13,000 ft
Max level speed: 127 kt
Never exceed speed: 160 kt
Cruise speed 75% pwr 9000 ft Best pwr: 127kts
Cruise speed 75% pwr 9000 ft Best econ: 123kts
Cruise speed 65% pwr 12,500 ft Best pwr: 118kts
Cruise speed 65% pwr 12,500 ft Best econ: 116kts
Cruise speed 55% pwr 12,500 ft Best pwr: 107kts
Cruise speed 55% pwr 12,500 ft Best econ: 103kts
Max range (with 45 min res) 75% pwr 9000 ft Best pwr: 525nm
Max range (with 45 min res) 75% pwr 9000 ft Best econ: 590nm
Max range (with 45 min res) 65% pwr 12,500 ft Best pwr: 553nm
Max range (with 45 min res) 65% pwr 12,500 ft Best econ: 633nm
Max range (with 45 min res) 55% pwr 12,500 ft: Best pwr 565nm
Max range (with 45 min res) 55% pwr 12,500 ft Best econ: 640nm
Fuel consumption 75% pwr 9000 ft Best pwr: 10.0 US Gal/hr
Fuel consumption 75% pwr 9000 ft Best econ: 8.5 US Gal/hr
Fuel consumption 75% pwr 9000 ft Best pwr: 10.0 US Gal/hr
Fuel consumption 65% pwr 12,500 ft Best econ: 7.5 US Gal/hr
Fuel consumption 55% pwr 12,500 ft Best pwr: 7.8 US Gal/hr
Fuel consumption 55% pwr 12,500 ft Best econ: 6.6 US Gal/hr
Endurance @ 65% power @ 8,000ft: 6.1 hr
Stalling speed clean: 56 kts
Stall speed flaps down: 50 kts
Turbulent air penetration speed: 108 kt
Take-off ground run: 975 ft
Take-off over 50 ft obstacle: 1490 ft
Landing ground roll: 595 ft
Landing over ft obstacle: 1115 ft
Fixed undercarriage
Wheel base: 6 ft 8 in
Wheel track. 10 ft
Wheel size mains: 6.00×6 / nose 5.00×5
Cabin doors: 1
Cabin length: 97 in
Cabin width: 41.5 in
Cabin height: 49 in
Baggage capacity: 200 lbs / 24 cu.ft
Trims: Elevator/ Rudder

PA28-161 Warrior III
Engine: Lycoming O-320-D3G, 160 hp
Length: 23.786 ft / 7.25 m
Height: 7.316 ft / 2.23 m
Wingspan: 35.007 ft / 10.67 m
Wing area: 169.964 sq.ft / 15.79 sq.m
Max take off weight: 2447.6 lb / 1110.0 kg
Weight empty: 1490.6 lb / 676.0 kg
Max. payload weight: 957.0 lb / 434.0 kg
Wing loading: 14.35 lb/sq.ft / 70.0 kg/sq.m
Max speed: 127 kts / 235 km/h
Max cruising speed: 126 kts / 233 km/h
Cruise: 115 kt
Service ceiling: 11,000 ft / 3353 m
Endurance: 5.8 hr
Landing speed: 44 kts / 82 km/h
Take off distance: 1650 ft / 503 m
Landing distance: 1161 ft / 354 m
Range: 520 nm / 963 km
Crew: 2+2

PA-28-180 Cherokee C
1962-67
Engine: 180hp Lycoming O-360-A3A
Length: 23’6
speed: 152 mph
Range: 845 mi
No built: 1,118

PA28-181 Archer II
Engine: 1 x Lycoming O-360-A4M, 180 hp
TBO: 2000 hrs
Fuel: 100 Octane
Prop: Sensenich 2 blade, fixed pitch 76 in
Seats: 4
Length: 23.8 ft
Height: 7.3 ft
Wingspan: 35 ft
Wing area: 170 sq.ft
Wing aspect ratio: 7.2
Max ramp wt: 2550 lb
Max take off wt: 2550 lb
Standard empty wt: 1413 lb
Max useful load: 1137 lb
Payload full std fuel; 690 lb
Max landing wt: 2550 lb
Wing loading: 15 lbs/sq.ft
Power loading: 14.2 lbs/hp
Fuel Capacity std; 50 US Gal
Max useable fuel: 48 US Gals / 288 lb
Climb rate: 735 fpm @ 76 kt
Climb gradient: 580 ft/nm
Rate of climb @ 8000 ft: 370 fpm
Service ceiling; 13,650 ft
Max Level speed: 129 kt
Take-off Ground Run; 870 ft
Take-off 50 ft; 1625 ft
Landing Ground Roll; 925 ft
Landing 50 ft; 1390 ft
Cruise @ 65% power @ 8,000ft: 118 kts.
Cruise Speed 75% 8,000 ft Best Power: 129 kt /148 mph
Cruise Speed 75% 8,000 ft Best Economy: 126 kt /145 mph
Cruise Speed 65% 12,000 ft Best Power: 125 kt /143 mph
Cruise Speed 65% 12,000 ft Best Economy: 122 kt /140 mph
Cruise Speed 55% 12,500 ft Best Power: 111 kt /128 mph
Cruise Speed 55% 12,500 ft Best Economy: 107 kt /123 mph
Max Range (with res) 75% 8,000 ft Best Power: 520 nm /598 sm
Max Range (with res) 75% 8,000 ft Best Economy: 600 nm /690 sm
Max Range (with res) 65% 12,000 ft Best Power: 565 nm /650 sm
Max Range (with res) 65% 12,000 ft Best Economy: 645 nm /742 sm
Max Range (with res) 55% 12,500 ft Best Power: 580 nm /667 sm
Max Range (with res) 55% 12,500 ft Best Economy: 670 nm /771 sm
Fuel Consumption 75% Best Power: 10.5 US Gal/hr
Fuel Consumption 75% Best Economy: 8.8 US Gal/hr
Fuel Consumption 65% Best Power: 9.0 US Gal/hr
Fuel Consumption 65% Best Economy: 7.6 US Gal/hr
Fuel Consumption 55% Best Power: 7.8 US Gal/hr
Fuel Consumption 55% Best Economy: 6.3 US Gal/hr
Fuel flow @ 65% power @ 8,000ft: 46 pph
Endurance @ 65% power @ 8,000ft: 6 hr
Stalling speed clean: 59 kts
Stall speed flaps down: 53 kts
Turbulent air penetration speed: 111 kts
Fixed undercarriage
Wheel base; 6.6 ft
Wheel Track; 10.0 ft
Wheel Size; 6.00 x 6
Cabin Doors; 1
Cabin Length; 97 in
Cabin Width; 41.5 in
Cabin Height; 49 in
Baggage Capacity; 200 lbs / 26 cu ft
Trim; Elevator / Rudder

1978 Piper PA-28-181 Archer II
Engine: Lycoming O-360-A4M, 180 hp @ 2700 rpm
TBO: 2000 hr
Fuel type: 100LL
Propeller: Sensenich metal, FP/76 in
Landing gear: Tri./Fixed
Max ramp weight: 2550 lb
Gross weight: 2550 lb
Landing weight: 2550 lb
Empty weight, std: 1416 lb
Useful load, std: 1134 lb
Payload, full std. fuel: 637.5 lb
Useful fuel, std: 48 USG
Oil capacity: 8 qt
Wingspan: 35 ft. 5 in.
Overall length: 24 ft.
Height: 7 ft. 3 in
Wing area: 170 sq. ft
Wing loading: 15 lb/sq. ft
Power loading: 14.2 lbs./hp
Wheel size: 6 ft. 7 in
Seating capacity: 4
Cabin doors: 1
Baggage capacity: 200 lb
Cruise speed 75% power: 125kt
Cruise speed 65% power: 116 kt
Cruise speed 55% power: 102 kt
Range (w/ res) 75% power: 565 nm
Range (w/ res) 65% power: 600 nm
Range (w/ res) 55% power: 670 nm
Fuel consumption 75% power: 10.5 USgph
Fuel consumption 65% power: 9.0 USgph
Fuel consumption 55% power: 7.8 USgph
Vs: 55 kt
Vso: 49 kt
Best rate of climb: 667 fpm
Best rate of climb, 8,000 ft: 280 fpm
Service ceiling: 13,236 ft
Takeoff ground roll: 870 ft
Takeoff over 50-ft. obstacle: 1210 ft
Landing ground roll: 925 ft
Landing over 50-ft. obstacle: 1390 ft

PA28-181 Archer III
Engine: Lycoming IO-360-A4M, 180 hp
TBO: 2000 hr
Fuel type: 100/100LL
Propeller: Sensenich FP
Landing gear: Tri/Fixed
Max ramp weight: 2558 lb
Gross weight: 2550 lb
Landing weight: 2550 lb
Empty weight, std: 1703 lb
Zero fuel wt: 2364 lb
Useful load, std: 847 lb
Payload, full std. fuel: 559 lb
Usable fuel: 48 USG
Fuel cap: 194 lbs
Oil capacity: 8 qt
Wingspan: 25 ft. 6 in
Overall length: 24 ft
Height: 7 ft. 4 in
Wing area: 171.8 sq. ft
Wing loading: 14.8 lbs./sq. ft
Power loading: 14.2 lbs./hp
Wheel base: 6 ft. 7 in
Wheel track: 10 ft
Wheel size: 6.00 x 6
Seating capacity: 4
Cabin doors: 1
Cabin width: 42 in
Cabin height: 45 in
Baggage capacity: 200 lb /26 cu. ft
Cruise speed 75% power @ 7,900 ft: 128 kt
Cruise speed 65% power @ 12,000 ft: 125 kt
Cruise speed 55% power @ 12,500 ft: 111 kt
Max range (w/ res) 75% power: 444 nm
Max range (w/ res) 65% power: 487 nm
Max range (w/ res) 55% power: 522 nm
Fuel consumption 75% power: 10.0 USgph
Fuel consumption 65% power: 8.6 USgph
Fuel consumption 55% power: 7.3 USgph
Endurance: 5.7 hr
Vs: 46 kt
Vso: 45 kt
Best rate of climb (SL): 667 fpm
Service ceiling: 13,240 ft
Takeoff ground roll: 1135 ft
Takeoff over 50-ft. obstacle: 1608 ft
Landing ground roll: 920 ft
Landing over 50-ft. obstacle: 1400 ft

PA28-235 Pathfinder
Engine: 1 x Lycoming O-540-B4B5, 235 hp
TBO: 2000 hr
Fuel type: 100/100LL
Propeller: Hartzell CS
Landing gear type: Tri/Fixed
Wingspan: 32 ft
Overall length: 24 ft
Height: 7 ft. 10 in
Wing area:170 sq. ft
Seats: 4
Pwr loading: 12.8 lb/hp
MTOW: 3000 lb
Empty wt: 1565 lb
Max ramp weight: 3000 lb
Landing weight: 3000 lb
Equipped useful load: 1359 lb
Payload max fuel: 867 lb
Wing loading: 17.6 lb/sq.ft
Wheel size: 6.00 x 6
Cabin doors: 1
Cabin width: 44 in
Cabin height: 47 in
Baggage capacity: 200 lb
Range max fuel/75% pwr: 748nm/5.6hr
Range max fuel / 55% pwr: 930 nm/ 7.8 hr
Service ceiling: 13,550 ft
75% cruise: 133 kt
55% cruise: 120 kt
Stall: 53-57 kt
1.3 Vso: 69 kt
ROC: 800 fpm
Takeoff ground roll: 850 ft
Takeoff over 50-ft. obstacle: 1410 ft
Landing ground roll: 1040 ft
Landing over 50-ft. obstacle: 1740 ft
Min field length: 1740 ft.
Fuel cap: 492 lb / 82 USG
Oil capacity: 12qt

PA28-235 Charger
Useful load: 1340 lbs
Cruise @ 75% pwr: 130 kts
Fuel cap: 319 lt
Seats: 5

1968 Piper Cherokee 235C
Engine: Lycoming O-540-B4B5, 235 hp
TBO: 2000 hr
Fuel type: 100/100LL
Propeller: Hartzell CS
Landing: Tri/Fixed
Max ramp weight: 2900 lb
Gross weight: 2900 lb
Landing weight: 2900 lb
Empty weight, std: 1467 lb
Useful load, std: 1433 lb
Payload, full std. fuel: 929 lb
Usable fuel, std: 84 USG
Oil capacity: 12 qt
Wingspan: 32 ft
Overall length: 23 ft. 9 in
Height: 7 ft. 1 in
Wing area: 171.6 sq. ft
Wing loading: 17 lbs./sq. ft
Power loading: 12.4 lbs./hp
Wheel size: 6.00 x 6
Seating capacity: 4
Cabin doors: 1
Cabin width: 44 in
Cabin height: 47 in
Baggage capacity: 200 lb
Cruise speed 75% power @ 8,000 ft: 136 kt
Cruise speed 65% power @ 8,000 ft: 130 kt
Cruise speed 55% power @ 8,000 ft: 122 kt
Stall speed (flaps up): 57 kt
Stall speed (flaps down): 52 kt
Best rate of climb (SL): 825 fpm
Service ceiling: 14,500 ft
Takeoff ground roll: 800 ft
Takeoff over 50-ft. obstacle: 1360 ft
Landing ground roll: 680 ft
Landing over 50-ft. obstacle: 1300 ft

PA28-235D
1970

PA28-235E
1971

PA28-236 Dakota
First built: 1978
Engine: 1 x Lycoming O-540-J3A5D, 235 hp
TBO: 2000 hrs
Prop: Hartzell 2 blade, constant speed 80 in
Seats: 4
Length: 25 ft / 7.52 m
Height: 7.4 ft / 2.18 m
Wingspan: 35 ft / 10.8 m
Wing area: 170 sq.ft / 15.79 sq.m
Wing aspect ratio: 7.2
Max ramp wt: 3000 lb / 1361.0 kg
Max take off wt: 3000 lb/ 1361.0 kg
Standard empty wt: 1608 lb / 730.0 kg
Max useful load: 1392 lb
Max landing wt: 3000 lb
Wing loading: 17.6 lbs/sq.ft
Power loading: 12.8 lbs/hp
Max useable fuel: 432 lb
Climb rate: 1110 fpm @ 85 kt
Climb gradient: 784 ft/nm
Rate of climb @ 8000 ft: 550 fpm
Service ceiling; 17,500 ft / 5334 m
Max speed: 148 kt / 274 km/h
Cruise @ 65% power @ 8,000ft: 137 kt
Fuel flow @ 65% power @ 8,000ft: 65 pph
Endurance @ 65% power @ 8,000ft: 6.3 hr
Range: 750 nm / 1389 km
Stalling speed clean: 63 kts
Stall speed flaps down: 56 kt
Turbulent air penetration speed: 122 kt
Fixed undercarriage
Take off distance: 1217 ft / 371 m
Landing distance: 1726 ft / 526 m
Landing speed: 56 kts / 104 km/h

Piper 1979 PA-28-201T Turbo Dakota
Engine: Continental TSIO 360 FB, 200 hp
TBO: 1,800 hrs
Prop: two blade, constant speed, 76 in. dia
Length: 25 ft
Height: 7 ft 7 in
Wingspan: 35 ft. 5 in
Wing area: 170 sq.ft
Max ramp wt: 2,900 lb
Max takeoff wt: 2,900 lb
Standard empty wt: 1,563 lb
Max useful load: 1,337 lbs
Max landing wt: 12,900 lb
Baggage capacity: 200lb
Wing loading: 17 lbs. per sq.ft
Power loading: 14.5 lb/hp
Max usable fuel: 72 USG/432 lb
Max rate of climb, sea level: 880 fpm
Max rate of climb, 8,000 ft: 820 fpm
Max operating altitude: 20,000 ft
Max speed (15,000): 162 kts
Cruise, 65% power at 8,000 ft: 132 kt
Cruise, 65% power at 18,000 ft: 148 kt
Max range (w/ res) 75% power: 729 nm
Max range (w/ res) 65% power: 766 nm
Fuel consumption 75% power: 12.0 US gph
Fuel flow at 65% power: 10.8 USG/hr
Endurance at 65% power, no res: 7 hrs
Stalling speed, clean: 67 kt
Stalling speed, flaps down: 59 kt
Turbulent air penetration speed: 122 kt
Seats: 4
U/C: fixed.
Cabin width: 42 in
Cabin height: 49 in
Takeoff ground roll: 963 ft
Landing ground roll: 861 ft

Avcon Cherokee 140 / 180
Engines: 1 x Lycoming O-360-A1A, 180 hp
Seats: 4
Wing loading: 12.9 lb/sq.ft
Pwr loading: 12.2 lb/hp
Max TO wt: 2200 lb
Empty wt: 1367 lb
Equipped useful load: 768 lb
Payload max fuel: 468 lb
Range max fuel/ 75% cruise: 592 nm/4.4 hr
Service ceiling: 17,300 ft
75% cruise: 116 kt
Stall: 48-54 kt
1.3 Vso: 62 kt
ROC: 950 fpm
Min field length: 550 ft
Fuel cap: 300 lb

Piper PA-25 Pawnee / Laviasa PA-25 Puelche

PA25-235

The rapid expansion of Piper’s operations in the 1950s meant that new facilities were soon required, and in 1957 the company opened a new aircraft development centre at Vero Beach, Florida, to be responsible for design, development and testing of new projects. The Vero Beach facility began its operations on a new specialised agricultural aircraft, designated Piper PA-25 Pawnee, for experience with the PA-18A configured for agricultural use had shown the active market for this category of aeroplane. Designed by Fred Weick and a development of a specialised ag-aeroplane called the AG-1, the Pawnee entered produc-tion in 1959 powered by the same 150 hp engine as in the Super Cub, Tri-Pacer and Apache.

A braced low-wing monoplane with fixed tailwheel landing gear, the PA-25 was powered initially by a 112kW Avco Lycoming O-320 flat-four engine, and this version was later redesignated PA-25-150 Pawnee. It had a glass-fibre chemical hopper installed forward of the cockpit, this having a volume of 0.57 cu.m, and the dust/spray distribution system was the same as that which had been proven on the PA-18A. Further forward of that again was a compartment for the loader driver that had a pop-up canopy. The passenger got in through the starboard side and sat in the compartment between the hopper and the firewall.

Advanced design features were intended to reduce the likelihood of an accident and to give the pilot a far better chance of survival in a crash; thus he was given a high sitting position to ensure an excellent all-round view, above average strength seat restraints, and a specially designed structure that was installed to leave the cockpit substantially undamaged in the usual type of low-speed crash associated with agricultural dusting/spraying operations.

PA25-160

In all, seven hundred and thirty one Pawnee 150s, plus two prototypes, were built between 1957 and 1963. To improve the 150 hp Pawnee’s performance Airwork installed the larger Lycoming 0 360 A2A engine of 180 horsepower. On the advice of Civil Aviation of New Zealand, the Pawnee fuel system was rede¬signed by Airwork and the fuel tanks situated far out in the wings. This mod proved to be excellent and no further troubles were encountered.

The 235 hp / 175kW Avco Lycoming O-540-B2B5 Pawnee with structural strengthening came on the market in 1962, including some with the more powerful 260 hp / 194kW O-540-E engine. Its hopper/ lank can carry 150 US gallons (568 litres) of liquid or 1,200 lb (544 kg) of dry chemi¬cal, and it can be changed over from dus¬ter to sprayer (or vice versa) in less than five minutes.

Some 235 hp models were converted by Airwork to have a 250 hp engine.

In 1965, Hazair at Orange modified a Pawnee 235 to incorporate side by side seating within he existing cockpit by widening the fuselage it several stations. A number of Pawnee 235s were converted in a similar fashion and other operators made comparable conversions.

The PA 25¬-235A/1 series was modified by widening the fuselage at the rear of the cockpit. Added to the top of the rear fuselage was the shaped turtledeck. The cockpit was fitted with dual controls and new side doors were “bulged” to provide more shoulder room. The hopper was removed and glider towing attachments and a release mecha¬nism were fitted. Air Express was responsible for the conversion and the company had the aircraft certified in 5 June 1970. VH KLA was then listed as a Piper PA 25 180A/1 and was re registered to the Gliding Club of Victoria and Benella, Australia.

A total of 5167 Pawnees of all types were built from 1959 to early 1982.
PA-25-150 – 731
PA-25-235 – 2,906
PA-25-260 – 251
Certification for the PA-25, 25-3 to 25-731, and all PA-25-235 was under FAA 2A10.

In 1998 Laviasa acquired from the New Piper Aircraft Company of the USA the Type Certificates (CCTT’S) No. 2 A 8 and 2 A 10 issued by the Federal Aviation Administration of the USA (FAA) in 1998 and the Certificates of Type No. AV-0004, AV-9901 and Production Certificate No. A-0801 issued by the National Civil Aviation Administration of Argentina (ANAC). These documents gave Laviasa the exclusive rights for the manufacture of PA-25-235 / 260 (formerly called “Pawnee” and renamed “Puelche”) and its parts.

Derivatives:
Gippsland Aeronautics GA-200 Fatman

Gallery

Specifications:

PA25-150
Engine: Ly¬coming O-320

PA25-235
Engine: Ly¬coming O 540 B2B5, 235 hp / 175kW
Prop: 7 ft 0 in (2.13 m) dia 2 blade
Wing span: 36 ft 2 in (11.02 m)
Length: 24 ft 8.5in (7.53 m)
Height: 2.21 m / 7 ft 3 in
Wing area: 183 sq ft (17.0 sq.m)
Gross weight: 2,900 lb (1,315 kg)
Empty weight: 725 kg / 1598 lb
Max cruising speed (duster/sprayer): 100/105 mph (161/169 kph)
Max range (duster/sprayer): 255/270 miles (410/434 km)
Accommodation: Crew 1

Pawnee B
1965
Improved -235 with larger hopper

Pawnee C
1966
Engine: optional Lycoming O-540-E from 1968
Oleo shock absorbers

PA25-235D
Engines: Lycoming O-540-B2C5, 235 hp
Wing loading: 15.8 lb/sq.ft
Pwr loading: 12.3 lb/hp
Max TO wt: 2900 lb
Empty wt: 1420 lb
Equipped useful load: 1433 lb
Payload max fuel: 1202 lb
Range max fuel/ 75% pwr: 203 nm/ 2.1 hr
Service ceiling: 13,000 ft
Hopper cap: 150 USG
75% cruise: 99 kt
Working speed: 75 kt
Working endurance: 2.8 hr
Stall: 53 kt
ROC: 700 fpm
Min field length: 1350 ft
Fuel cap: 231 lb
Seats: 1

PA25-260 Pawnee C
Engine: 260 hp
Prop: CSU
Hopper cap: 145 USG

PA25-260D
Engines: Lycoming O-540-G1A, 260 hp
Seats: 1
Wing loading: 15.8 lb/sq.ft
Pwr loading: 11.2 lb/hp
Max TO wt: 2900 lb
Empty wt: 1472 lb
Equipped useful load: 1381 lb
Payload max fuel: 1150 lb
Range max fuel/ 75% pwr: 195 nm/ 2.0 hr
Service ceiling: 14,000 ft
Hopper cap: 150 USG
75% cruise: 100 kt
Working speed: 75 kt
Working endurance: 2.7 hr
Stall: 53 kt
ROC: 755 fpm
Min field length: 1250 ft
Fuel cap: 231 lb

PA-25-235 Pawnee C courtesy Larry in NC

Piper PA-24 Comanche

On 24 May 1956 Piper flew the prototype of a new single-engine four-seat cabin monoplane that it designated initially Piper PA-24 Comanche, but which later became known as the PA-24-180 Comanche. A cantilever low-wing monoplane of all-metal construction, this very clean looking aircraft had such features as retractable tricycle landing gear, an all-moving tailplane and a 180 hp / 134kW Avco Lycoming O-360-A1A engine. The first production aircraft was flown on 21 October 1957, and from the outset it was available in four versions, the Standard with basic essential equipment, the Custom, Super Custom and AutoFlite having progressively more sophisticated equipment, the last of them introducing a two-axis autopilot.

Piper PA-24 Air Test

The capability of the PA-24-180 Comanche was demonstrated by American pilot Max Conrad in establishing FAI-accredited world class distance records of 11211.83km in a straight line and 11138.72km in a closed circuit during 1959 and 1960 respectively. And flying a PA-24-250 Comanche in 1959 over a straight-line distance of 12341.26km; these records remained unbroken in 1983.

The PA-24-250 Comanche which soon supplemented the PA-24-180 (1,143 built) and while basically similar differed by having the 186kW O-540-A1A engine; this variant was built to a total of 2,537.

This was followed in 1964 by the PA-24-260 Comanche B with a 194kW version of the O-540 engine increasing performance, cleaned up landing gear, and a single-fork main gear was used. This model was used by the UK’s Sheila Scott between 18 May and 20 June 1966 to establish a new round-the-world class speed record, covering a distance of 46759km.

PA-24-250 – 1960

The pressurized Comanche design may be Piper’s most lamented failure. The sole prototype was destroyed in a freak takeoff roll accident in 1966, when the pilot got out of synch with the touchy electric nosewheel steering. But the heavy single had already run into problems meeting certification requirements that demanded a 61 knot stalling speed.

One day, Pug Piper was sitting in a friend’s 450 hp Staggerwing, and thought, ‘Gee, we can do better than this by putting a 400 Lycoming in the nose of the Comanche.’ Delayed by engine problems, the Comanche 400 went on sale just as the Twin Comanche became available for not much more money. The Interceptor 400 was a PA-24 Commanche with a six cylinder Lycoming engine built in 1964-65.

Turbo Comanche C

Last of the single-engine Comanches was the PA-24T-260 Turbo Comanche which introduced an IO-540 engine with a Rayjay turbo-charger to give considerably improved performance, and when production of the PA-24-260s ended in 1972 a total of 1,028 had been built, giving a Comanche grand total of 4,708. Production ended in 1972 due to the floods at Piper’s factory, Lock Haven. Certification for the PA-24, 24-2 to 24-3687 and PA-24-260, 24-4247 and 24-4300 to 24-5034, was under FAA 1A15.

A Commanche 400 owned by Garrett-AiResearch, powered by their TPE 331 turboprop engine, was flown to a new altitude record for light turboprops by company pilot Jack Womack, reaching 41,320 ft in 70 minutes.

Garrett-AiResearch TPE 331 powered Commanche 400

Gallery

Comanche 180
Engine: Lycoming O-360-A1A, 180 hp
TBO: 2000 hr
Fuel type: 80/87
Propeller: Hartzell CS
Landing gear: Tri/Retr.
Max ramp weight: 2550 lb
Gross weight: 2550 lb
Max landing weight:2550 lb
Empty weight: 1530 lb
Useful load: 1020 lb
Payload, full std. fuel: 660 lb
Wingspan: 36 ft. 11 in
Overall length: 24 ft. 9 in
Height: 7 ft. 4 in
Wing area:178 sq. ft
Wing loading: 14.3 lbs./sq. ft
Power loading: 14.2 lbs./hp
Wheel base: 6 ft. 7 in
Wheel track: 9 ft. 8 in
Wheel size: 6.00 x 6 in
Seating capacity: 4
Cabin doors: 1
Cabin width: 44 in
Cabin height: 45 in
Baggage capacity: 100 lb
Cruise speed 75% power @ 8,000 ft: 139 kt
Cruise speed 65% power @ 11,500 ft: 133 kt
Cruise speed 55% power @ 14,000 ft: 122 kt
Max range (w/ reserve) 75% power: 682 nm
Max range (w/ reserve) 65% power: 771 nm
Max range (w/ reserve) 55% power: 860 nm
Fuel consumption 75% power: 9.5 USgph
Fuel consumption 65% power: 8.2 USgph
Fuel consumption 55% power: 6.9 USgph
Stall speed (flaps up): 53 kt
Best rate of climb: 910 fpm
Service ceiling: 18,500 ft
Takeoff ground roll: 750 ft
Takeoff over 50-ft. obstacle: 2240 ft
Landing ground roll: 600 ft
Landing over 50-ft. obstacle: 1025 ft

1964 Piper Comanche 250 PA-24-250
Engine: Lycoming IO-540-C, 250 hp
TBO: 2000 hr
Fuel type: 100LL
Propeller: Hartzell two-blade CS / 77 in
Landing gear: Tri/Retr.
Gross weight: 2900 lb
Max landing weight: 2900 lb
Empty weight, std: 1690 lb
Useful load, std: 1210 lb
Useful load – equipped: 1073 lb
Payload, full std. fuel, 60 USgals: 850 lb
Payload – full opt. fuel, 90 gals: 670 lb
Usable fuel: 37 USgal
Oil capacity: 12 qt
Wingspan: 36 ft
Overall length: 24 ft. 10 in
Height: 7 ft. 5 in
Wing area: 178 sq. ft
Wing loading: 16.3 lbs./sq. ft
Power loading: 11.6 lbs./hp
Wheel base: 6 ft. 6 in
Wheel track: 9 ft. 10 in
Wheel size mains: 6.00 x 6 in
Wheel size nose: 6.00 x 6 in
Seating capacity: 4
Cabin doors: 1
Cabin length: 108 in
Cabin width: 45 in
Cabin height: 47 in
Baggage capacity: 200 lb /20 cu. ft
Max level speed: 165 kt /190 mph
Cruise speed 75% power: 157 kt / 181 mph
Cruise speed 65% power: 154 kt / 177 mph
Cruise speed 55% power: 142 kt /164 mph
Max. range opt. fuel, 45-min. res 75% power: 928 nm / 1068 sm
Max. range opt. fuel, 45-min. res 65% power: 1000 nm / 1151 sm
Max. range opt. fuel, 45-min. res 55% power: 1040 nm / 1197 sm
Max. range opt. fuel, 45-min. res 45% power: 1108 nm / 1275 sm
Fuel consumption 75% power: 13.7 USgph
Fuel consumption 65% power: 12.3 USgph
Fuel consumption 55% power: 11.0 USgph
Fuel consumption 45% power: 9.5 USgph
Stall speed (gear, flaps up): 61 kt / 70 mph
Stall speed (gear, flaps down): 55 kt/63 mph
Best rate of climb (SL): 1350 fpm
Service ceiling: 20,000 ft
Takeoff ground roll: 750 ft
Takeoff over 50-ft. obstacle: 1650 ft

Turbo Comanche C
Engine: Lycoming TIO 540 RIA5, 260 hp
TBO: 1,500 hrs
Prop: 77 in Hartzell constant speed
Wing span: 35 ft. 11.75in
Airfoil: NACA 642A215
Aspect ratio: 7.28:1
Wing area: 178 sq. ft
Wing loading: 18 lb/sq.ft
Seats: 6
Empty weight: 1,894 lbs
Useful load: 1,306 lbs
Payload with full opt fuel: 702 lbs
Gross weight: 3,200 lbs
Power loading: 12.3 lb/hp
Fuel capacity (std.): 60 USG
Fuel capacity (opt): 90 USG
Baggage capacity: 250 lbs
Baggage area: 20 cu.ft
Takeoff dist over 50 ft: 1,800 ft
Rate of climb: 1,320 fpm
Service ceiling: 25,000 ft
Max speed: 242 mph/210 kts
Cruise (75% @ 25,000ft): 228 mph/198 kts
Econ cruise (55% @ 25,000ft): 209 mph/182 kts
Range @ max cruise (45 min. res, opt tanks): 1,120 sm/970 nm
Range (@ econ cruise (45.min. res, opt tanks): 1,330 sm/1,155 nm
Duration @ max cruise (opt tanks): 5 hr 40 min
Stall speed (gear & flaps down): 67 mph/58 kts
Landing dist over 50 ft: 1,200 ft.

PA-24T-260
Engine: 1 x Avco Lycoming IO-540 turbocharged, 194kW
Wingspan: 10.97 m / 36 ft 0 in
Length: 7.62 m / 25 ft 0 in
Height: 2.29 m / 8 ft 6 in
Wing area: 16.54 sq.m / 178.03 sq ft
Max take-off weight: 1451 kg / 3199 lb
Empty weight: 859 kg / 1894 lb
Max. speed: 389 km/h / 242 mph
Ceiling: 7620 m / 25000 ft
Range: 2398 km / 1490 miles

PA24 Interceptor 400
Engine: Lycoming IO-720, 400 hp
Top speed: 233 mph
Cruise: 202 mph

1964 Piper Comanche 400
New price (1964): $36,890
Engine: Lycoming IO-720 A1A, 400 hp
TBO: 1800 hr
Fuel type: 100
Propeller type: CS
Landing gear: Tri./Retr
Max ramp weight: 3600 lb
Gross weight: 3600 lb
Landing weight: 3600 lb
Empty weight, std: 2110 lb
Useful load, std: 1490 lb
Useful fuel, std: 130 USG
Payload, full std. fuel: 710 lb
Wingspan: 36 ft
Overall length: 25 ft. 8 in
Height: 7 ft. 10 in
Wing area: 178 sq. ft
Wing loading: 20.2 lbs./sq.ft
Power loading: 9.0 lbs./hp
Wheel size: 6.00 x 6 in
Seating capacity: 4
Cabin doors: 1
Cabin width: 44 in
Cabin height: 45 in
Cruise speed 75% power: 185 kt
Cruise speed 65% power: 180 kt
Cruise speed 55% power: 171 kt
Fuel consumption 75% power: 22 USgph
Fuel consumption 65% power: 19 USgph
Fuel consumption 55% power: 16 Usgph
Vso: 59 kt
Best rate of climb, SL: 1600 fpm
Service ceiling: 19,500 ft
Takeoff ground roll: 980 ft
Takeoff over 50-ft obstacle: 1500 ft
Landing ground roll: 1180 ft
Landing over 50-ft. obstacle: 1820 ft

Piper PA-23 Apache / PA-23 Aztec / UO-1 / U-11 / Aztec Nomad

Apache

It all began in 1952 with the introduction of the Twin-Stinson, the first Piper of Stinson lineage to be produced since the Piper/Stinson Flying Station Wagon. It was powered by twin 125-hp Lycoming engines. The following year Piper introduced the PA-23 Apache, a vast improvement on the Twin-Stinson concept.The Apache featured a conventional single rudder tail unit rather than the Twin-Stinson’s twin-tail configuration, and power was boosted with the use of 150-hp Lycomings. The new Piper also utilized all-metal construction and retractable landing gear.

On 2 March 1952 Piper flew the prototype N1953A of a new twin-engine aircraft which it then identified as the Piper PA-23 Twin-Stinson. A cantilever low-wing monoplane of all-metal construction, it had a tailplane set high on the fuselage and mounting endplate fins and rudders, retractable tricycle landing gear and an enclosed cabin seating four in two pairs. The Stinson’s fabric covering was replaced by metal and there was a major redesign from the cabin aft, including a single tail. Power was upgraded to two 150hp Lycoming 0-320-A, and prototype N23P c/n 23-1 took wing on 29 July 1953. There followed a second prototype [N1000P] c/n 23-2, and issuance of a TC1A10 on 29 January 1954.

Piper PA-23 Apache Article

It entered production in early 1954 as the PA-23 Apache, later designated PA-23 Apache 150. A total of 1,231 were built, priced at $32,000.

Piper Apache 160 N3454P

Powered by two Lycoming O-320 engines, each of 150 h.p. with Hartzell constant-speed airscrews, the Apache has comprehensive instruments and radio equipment included to remove the limitation of “daylight, V.F.R. only” flying, and the selling price of the new machine was $32,500, or approximately £11,600, in 1954.

Maximum all-up weight of the Apache is 3,500 lb which, with full tanks, four passengers, full instrumentation aria radio, enables 198 lb of baggage or extra equipment to be carried. Maximum sea-level cruising speed is 160 m.p.h. Single-engined ceiling at top weight is 5,000 ft, and at 3,100 lb is 8,000 ft.

The aircraft is of all-metal construction, and has an empty weight (completely equipped) of 2,170 lb. The “Custom” model is fitted with the three radio installations shown in the cockpit photograph; an autopilot can be fitted. The baggage compartment behind the cabin has a volume of 25 cu ft, and the rear passenger seats can be easily removed to increase the available cargo space to 80 cu ft.

The dual controls are conventional, with toe brakes on the left rudder pedals, and with connections to the steerable nosewheel. Rudder and elevator trim controls are located centrally in the cabin roof. The “Electrol” tricycle landing gear is hydraulically retractable and is fitted with Goodrich wheels, tyres and brakes. Two 36-gallon rubber fuel tanks are installed in the wing, outboard of the engines. The span of the Apache is 37ft; length 27ft lin; and wing area 204 sq ft.

The Apache achieved FAA 1A10 certification on January 29, 1954, with Lycoming 150hp. This ended up covering all PA-23, PA-23-160, and PA-23-250 27-1 to 27-1999 and 27-2505 to 27-8154030.

In 1958, O-320-B 160-hp engines were added as the PA-23 Apache 160, and with some interior revisions so that it was classed as a four/ five-seat aircraft (816 built), and in 1963, the 175kW / 235-hp Lycoming O-540-B1A5 became the standard powerplant to meet requirements for better single-engine performance (119 built). This later model was the first to sport swept tail surfaces and was quite similar to the Aztec of the same vintage, except for the Apache’s smaller engines and shorter nose. 816 were built.

Piper PA-23-160 Apache ZK-BYB

The optional fifth seat became available in 1956, retrofitable to earlier models, though baggage capacity was reduced from 200 lbs to 30 lbs when the seat was occupied, and two 18 USG aux tanks in the outboard wings were installed. Introduced in 1958 were the 160 hp Lycomings along with an increase in MTOW from 3500 lbs to 3800 lbs.

The Apache 235 (later becoming the Aztec 235) featured a swept tail and two Lycoming 235hp O-540-B1A5 engines. 119 were built.

A total of 481 of the 1959 Aztec 250 were sold.

584 of the 1960 Aztec B were sold, plus 20 to the USN as UO-1.

Piper Aztec B N5000Y

1357 of the 1962 Aztec C were built.

Introduced in 1968, the Aztec D featured a long nose with baggage compartment. 492 were built with an export model to South America and Africa.

1,020 of the 1970 introduce Aztec E were built.

Introduced in 1975, the Aztec F was powered with two 250hp Lycoming IO-540-C4B5 engines. Priced at $141,415 (1977), 714 were built, including Turbo Aztec F with TIO-540-C1A engines.

PA-23-250 Apache F ZK-EVP

The 1960 Apache G began the third side window. Some 170 of the 1961 Apache H model were built.

Apache G

Piper PA-23-160 Apache G Owners Handbook

Piper’s 1964 Aztec had streamlined nacelles, flush wing flaps and fully enclosed wheel doors raising the max cruise to 208 mph. Lycoming 250 hp engines have fuel injection and lightweight Hartzell props. The price was $54,990.

From 1962 to 1965, built 117 Apache 235s. More than 2000 150- to 160-hp Apaches were built between 1954 and 1962 until production was replaced by the Twin Commanche (introduced in 1963).

The type continued in production as the Apache until 1965, by which time 2,166 had been built, including 1,231 examples of the first production version.

PA23-250C Aztec

With sales of the Apache 235 declining, Piper developed an improved version of this aircraft in 1960 which introduced a 250 hp / 186kW O-540 engine and provided six-seat capacity. The Aztec introduced a longer fuselage, longer nose, squared tail, and 5-6 seats instead of the Apache’s four.

This entered production under the designation PA-23-250 Aztec in 1959-60, the US Navy acquiring 20 of these aircraft, 149050 to 149069, for use in a utility role, designating them UO-1, changed to U-11A in 1962.

Piper U-11A

The Aztec was built until early 1982 when production was suspended. In final production form the type had the designation PA-23-250 Aztec F, and was available also as the generally similar PA-23T-250 Turbo Aztec F which differed by having Avco Lycoming TIO-540 engines with a Garrett turbo-charging system. The first F model, introduced in 1976, offered optional fuel capacity increase.

Both Apache and Aztec were available until the Apache line was dropped. A total of 2047 were built from 1954 to 1962.

Aztec Nomad Inc of Canada, produced the Aztec Nomad conversion of six-place Piper Aztec to twin EDO floats. The useful load was 2200 lb, reducing to 1800 lb as optional amphibian.

Aztec Nomad C-GWHI

Gallery

1954 Piper Apache 150
Engines: 2 x Lycoming O-320-A1A, 150 hp
TBO: 2200 hr
Fuel type: 100LL
Props: Hartzell HC-82VL-2C, 2 blade CS, 72 in..
Landing gear: hydraulic Tri/Retr.
Max ramp weight: 3800lb
Gross weight: 3800 lb
Landing weight: 3800 lb
Empty weight, std: 2215 lb
Useful load, std: 1585 lb
Payload, full std. fuel: 1153 lb
Usable fuel: 72 USG
Optional fuel: 108 USG
Oil capacity: 8 qt
Wingspan: 37 ft
Overall length: 27 ft. 1 in
Height: 9 ft. 6 in
Wing area: 208 sq. ft
Wing loading: 12.7 lbs./sq. ft
Power loading: 12.7 lbs./hp
Wheel base: 7 ft. 4 in
Wheel track: 11 ft. 4 in
Wheel size: 6.00 x 6 in
Seating capacity: 4 std, 5 opt
Cabin doors: 1
Cabin width: 48 in
Cabin height: 50 in
Baggage capacity: 200 lb /25 cu. ft
Maximum speed: 180 mph
Cruise speed 75% power @ 6,000 ft: 146 kt / 170 mph
Cruise speed 65% power @ 9,000 ft: 139 kt / 162 mph
Cruise speed 55% power @ 12,000 ft: 128 kt
Range at 75% pwr no reserve (72 USgal): 620 sm
Range at 65% pwr no reserve (72 USgal): 710 s.m
Maximum range no reserve (72 USgal): 840 sm
Fuel consumption 75% power: 18.0 USgph
Fuel consumption 65% power: 16.0 USgph
Fuel consumption 55% power: 14.0 USgph
Vs: 59 kt
Vso: 51 kt
Stall speed, gear and flaps up: 66mph. Stall speed, gear and flaps down: 59 mph
Best rate of climb (SL): 1150 fpm
Best rate of climb, 8000 ft: 600 fpm
Service ceiling: 15,500 ft
Single-engine absolute ceiling: 6750 ft
Rate of climb, SE SL: 240 fpm
Takeoff ground roll: 1290 ft
Takeoff over 50-ft. obstacle (ft.): 1600 ft
Landing ground roll: 750 ft
Landing over 50-ft. obstacle: 1360 ft

PA23-160 Apache
Engines: 2 x Lycoming O-320-B, 160 hp.
Gross wt: 3,800 lb
Empty wt. 2,280 lb
Total fuel cap: 108 USG
Max speed 3,000 ft: 152 kt / 183 mph
Vmc: 70 kt
Initial climb rate 1,260 fpm
Best SE climb speed: 83kt
SE ceiling: 5,500 ft
Cruise 23×23: 130 kt / 173 mph
Stall 61 mph
Range 1,260 sm
Ceiling 17,000 ft
Takeoff run 1,190 ft
Landing roll 750 ft
Seats 4-5

PA23-235 Apache / Aztec 235
Lycoming: 2 x Lycoming O-540-B1A5, 235 hp
Wingspan: 37 ft 1.75 in / 11.33 m
Length: 27 ft 7 in / 8.41 m
Empty wt. 2,735 lb / 1240 kg
MTOW: 4,800 lb / 2177 kg
Fuel capacity 144 USG
Top speed 202 mph
Cruise 75% 7000ft/2135m: 166 kt / 191 mph / 307 km
Stall mph 62
Initial climb rate: 1,450 fpm / 442 m/min
Service Ceiling: 17,200 ft / 5240 m
Range 75%: 851 nm / 980 sm / 1575 km
Takeoff run: 830 ft
Landing roll: 880 ft
Seats 4-5

PA-23 Aztec 250
Engines: 2 x 250hp Lycoming O-540-A1D5;
Wingspan: 37’3″
Length: 30’3″
Useful load: 1900 lb
Max speed: 216 mph
Cruise: 190 mph
Stall: 68 mph
Range: 885 mi
Ceiling: 21,000′
Seats: 5-6

Aztec A
1959
Engines: 2 x Lycoming IO 540 A1D5, 250 hp
Seats: 5

Aztec B
1962
Seats: 6

Aztec C
1964
Engines: 2 x Lycoming IO 540 C4B5, 250 hp

Turbo Aztec C
1964
Engines: 2 x Lycoming TIO 540 C1A, 250 hp

Aztec D
Engines: 2 x Lycoming IO 540 C41B5, 250 hp
Prop: 6 ft 5 in (1.96 m) dia 2 blade metal
Wing span: 37 ft 2.5 in (11,34 m)
Length: 30 ft 21 in (9,21 m)
Wing area: 207.56 sq ft (19.28 sq.m)
Gross weight: 5,200 lb (2,360 kg)
Normal cruising speed: 210 mph (338 km/h) at 4,000 ft (1,220 m)
Range: 830 miles (1,335 km) at normal cruising speed
Seats: 6.

Aztec E
Engine: 2 x Lycoming IO-540-C4B5, 250 hp
Wingspan: 37 ft 2.5 in / 11.34 m
Length: 31 ft 2.75 in / 9.52 m
Empty weight: 3042 lb / 1379 kg
MTOW: 5200 lb / 2360 kg
Cruise 4000ft/1220m: 182 kt / 210 mph / 338 kph
Range cruise 10200ft/3110m: 169 kt / 195 mph / 314 kph
ROC SL: 1490 fpm / 455 m/min
Absolute ceiling: 21,100 ft / 6430 m
Norm max fuel range: 720 nm / 830 mi / 1335 km
Max range cruise: 1050 nm / 1210 mi / 1947 km
Seats: 6
Cabin capacity: 1700 lb / 725 kg
Rear cabin capacity: 150 lb / 68 kg
Nose compartment capacity: 150 lb / 68 kg
Max cargo capacity: 122 cu.ft / 3.45cu.m

Turbo Aztec E
1964
Engines: 2 x Lycoming TIO 540 C1A, 250 hp

PA23-250F Aztec F
Engines: 2 x Lycoming IO 540 C4B5, 250 hp
TBO: 2,000 hrs
Props: 2 blade, constant speed, 77 in dia
Max wt: 5200 lbs
Max ldg wt: 4940 lbs
Empty wt: 3221 lbs
Useful load: 1979 lbs
Payload with full fuel: 759 lb
Wing area: 207 sq.ft
Wing loading: 25.1 lb/sq.ft
Pwr loading: 10.4 lb/hp
Wing span: 37.3 ft
Length: 31.2 ft
Height: 10.1 ft
Cabin length: 8.5 ft
Cabin width: 45 in
Cabin height: 50.5 in
Useable fuel: Std: 137.2 USG, Optional: 177.2 USG/1,063 lbs
Baggage capacity: Nose: 17.4 cu.ft, 150 lbs, Rear: 23 cu.ft, 150 lbs
Seats: 6
Maximum speed: 178 kts
Normal cruise: 179 kts @ 3850 ft
Economy cruise (range, std fuel): 170 kts @ 6250 ft (830 nm)
Long range cruise: (162 kts @ 10,800 ft: 985 nm
Max cruise, 75% power (2,300 rpm) at 4,000 ft: 177 kts
Econ cruise, 55% power at 10.000 ft: 152 kts
Duration at max cruise: 5 hrs
Duration at econ cruise: 8.6 hrs
ROC: 1400 fpm
SE ROC: 235 fpm
Single engine climb gradient at 88 knots (Vy): 1.5 degrees
Stall (5200 lbs), clean: 61 kts, Flap dn: 54.5 kts
Service ceiling (5200 lbs): 17,600 ft
Service ceiling SE: 4800 ft.
T/O (50ft): 1980 ft
Ldg dist (50ft): 1585 ft

PA23-250F Turbo Aztec F
Engines: 2 x Lycoming TIO-540-C1A, 250 hp / 186kW
Max wt: 5200 lb / 2359 kg
Max ldg wt: 4940 lbs
Empty wt: 3358 lb
Useful load: 1842 lb
Wing area: 207 sq.ft / 19.23 sq.m
Wing loading: 25.1 lb/sq.ft
Pwr loading: 10.4 lb/hp
Wing span: 37 ft 4 in / 11.37 m
Length: 31 ft 3 in / 9.52 m
Height: 10 ft 1 in / 3.07 m
Cabin length: 8.5 ft
Cabin width: 45 in
Cabin height: 50.5 in
Useable fuel: Std: 137.2 USG
Optional fuel: 177.2 USG
Baggage capacity: Nose: 17.4 cu.ft, 150 lbs, Rear: 23 cu.ft, 150 lbs
Max. speed: 407 km/h / 253 mph
Economy cruise (range, std fuel): 193 kts @ 24,000 ft (780 nm)
Long range cruise (range, std fuel): 165 kts @ 20,000 ft: 835 nm
ROC: 1470 fpm
ROC SE: 225 fpm
Stall (5200 lbs), clean: 61 kts, Flap dn: 54.5 kts.
Service ceiling (5200 lbs): 24,000 ft/7315 m, SE: 17,000 ft
T/O (50ft): 1980 ft
Ldg dist (50ft): 1585 ft.

UO-1 / U-11A
Engines: two 250hp Lycoming O-540-A1D5
Wing span: 37’3″
Length: 30’3″
Useful load: 1900 lb
Max speed: 216 mph
Cruise: 190 mph
Stall: 68 mph
Ceiling: 21,000′
Seats: 5

Miller Custom Apache / Piper Apache
Engines: 2 x Lycoming IO-360-C1C, 200 hp
Seats: 6
Wing loading: 19.3 lb/sq.ft
Pwr loading: 10 lb/hp
Max TO wt: 4000 lb
Empty wt: 2400 lb
Equipped useful load: 1501 lb
Payload max fuel: 583 lb
Range max fuel/ 75% cruise: 1233 nm/7.1 hr
Range max fuel / 55% cruise: 1311 nm/ 8 hr
Service ceiling: 21,000 ft
Max cruise: 174 kt
55% cruise: 165 kt
Vmc: 72 kt
Stall: 50-55 kt
1.3 Vso: 65 kt
ROC: 2000 fpm
SE ROC: 500 fpm @ 78 kt
SE ceiling: 10,500 ft
Min field length: 1100 ft. Fuel cap: 648/918 lb

Seguin Geronimo / Piper Apache
Engines: 2 x Lycoming O-360-A1D, 180 hp
TBO: 2000 hr
Fuel type: 100/100LL
Propeller: Hartzell, 2-blade, CS
Landing gear: Tri./retr.
Wingspan: 37 ft
Overall length: 31 ft. 6 in
Height: 31 ft. 6 in
Wing area: 207.6 sq. ft
Max ramp weight: 3800lb
Empty wt: 2500 lb
Usable fuel, normal: 108 USG / 648 lb
Optional fuel: 156 USG / 936 lb
Oil capacity: 8 qt
Wing loading: 19.3 lb/sq.ft
Pwr loading: 11.1 lb/hp
Max TO wt: 4000 lb
Equipped useful load: 1400 lb
Payload max fuel: 464 lb
Payload, full normal fuel: 729lb
Wheel base: 7 ft. 3 in.
Wheel track: 11 ft. 3 in.
Wheel size: 6.00 x 6 in
Cabin doors: 1
Cabin width (in.): 48
Cabin height (in.): 50
Cruise speed 75% power: 170 kt
Cruise speed 60% power: 163 kt
Cruise speed 55% power: 160 kt
Max range (w/ reserve): 75% power: 663 nm
Max range (w/ reserve) 60% power: 880 nm
Service ceiling: 23,000 ft
Vmc: 62 kt
Stall: 49-57 kt
1.3 Vso: 64 kt
Vso : 47kt
ROC: 1500 fpm
SE ROC: 800 fpm SL-300 ft
SE ROC: 700 fpm @ 82 kt
SE ceiling: 12,000 ft
Min field length: 650 ft
Takeoff ground roll: 400 ft
Landing ground roll: 400 ft
Landing over 50-ft. obstacle: 1400 ft
Seats: 5/6

Aztec Nomad
Engines: 250hp Lycoming IO-540
Props: seaplane
Wingspan: 40’2″
Length: 31’2″
Useful load: 2200 lb / as amphibian 1800 lb
Mac speed: 193 mph
Cruise: 153 mph
Stall: 54 mph
Range: 785 mi
Undercarriage: twin EDO float
Seats: 6

Apache 235
PA-23-250 Aztec

Piper Twin Stinson

Piper Twin Stinson N1953A

The four-place Piper Twin Stinson of 1952 was of steel-tube construction with fabric-covered fuselage and outer wing panels, and tricycle gear. Forerunner of Apache was acquired in a partial merger of companies in 1952.

First flying on 2 March 1952, N1953A c/n 23-01 flight tests at Piper revealed engine cooling problems— it was underpowered and suffered in single-engine handling as well—so 150hp Lycomings were installed with full-feathering props. The original twin tail was replaced by a single tail from a PA-6 and other features were modified to bring up prototype PA-23.

Engines: two 125hp Lycoming 0-290-D
Wingspan: 37’3″
Length: 31’2″
Seats: 4

Piper PA-22 Tri-Pacer / Caribbean / Colt / Tri Pacer Twin

Tri-Pacer

Piper had nothing to compete with the Cessna 150, so Piper made use of its Tri Pacer tooling and brought forth a two seat, 108 hp version of the PA 22. A nose-wheel development of the PA-20. This was the final high-wing design to come from Piper. It differed from the PA-20 by having an interconnected aileron and rudder pedal control system, enabling the Tri-Pacer to be flown entirely by the control column without the need to have an input from the rudder pedals during turns. This system was easily disconnected, however, to permit independent use of the ailerons, elevator and rudder. Basically, an updated PA-20 Pacer with tricycle undercarriage, the PA-22 Tri-Pacer (TC 1A6) appeared in 1950 and sold in large numbers at $4,995-6,995 for Standard, Custom, and Super Custom models in 1962. 1,822 Colt were sold.

1959 Piper PA22 160 Tri-Pacer

The Tri-Pacer was introduced as four-seat PA22-125 (125 hp) and PA22-135 (135 hp), the -135 being standard from 1953.

Piper PA-22 Colt Article

By 1955 the Tri-Pacer (TC 1A6) had been updated and fitted with a 150 hp / 112kW Avco Lycoming O-320 engine, as installed in the PA-18 Super Cub. A more powerful version powered by a 160 hp engine was marketed in 1957 and the following year the 150 hp version became the Caribbean $8,395 (1959). 7,668 were built. EDO floats were an option for $2,435.

The final PA-22 version was the simplified two-place Colt built from 1960 to 1964. The Colt utilized the Tri-Pacer undercarriage, engine mounts, windshield, door, tail surfaces, struts, seats and instrument panel. Selected as the standard aero club trainer by Sweden, nearly 1800 of the type had been delivered by the beginning of 1964.

The 125-hp Pacers, fully equipped, sold for $5,170, and the 135-hp models were priced at $6,275, which included an Aeromatic or Sensenich controllable-pitch propeller.

1959 Piper PA22 160 Tri-Pacer

The Colt never had a chance. Despite its eight horsepower edge over the Cessna 150, it was a stocky, ragwing, flapless loser with a poor glide ratio; slow sales prompted Piper to axe the program after just three years.

The Tri Pacer Twin had two 100 hp Continentals in its nose, one atop the other, driving a pair of props on concentric shafts. The concept led to a similar sandwich engine Comanche study, after Bill Lear assured Piper that the first company to develop a conventionally configured “single” with engine out capability would get rich quick. Ed Swearingen, however, who did the feasibility study, convinced Piper that the Comanche would never work.

The PA-22-108, -150, and –16 were certified under FAA 1A6 and by the end of production a total of 9490 had been produced.

Gallery

PA22-125 Tri-Pacer
Engine: Lycoming O-290-D2, 125 hp
Seats: 4

PA22-135 Tri-Pacer
Engine: Lycoming O-290-D2, 135 hp
Seats: 4

PA22-108 Colt
Engine: Lycoming O-235-C1B, 108 hp
Wingspan: 30 ft 0 in / 9.14 m
Length: 20 ft 0 in / 6.10 m
Height: 6 ft 3 in
Wing area: 147 sq.ft
Empty weight: 940 lb / 426 kg
MTOW: 1650 lb / 748 kg
Max option fuel: 36 USG / 136 lt
Max speed: 120 mph at SL
Max cruise 75% 7000ft/2135m: 100 kt / 115 mph / 185 kph
ROC SL: 610 fpm / 186 m/min
Service ceiling: 12,000 ft / 3660 m
Range std fuel: 281 nm / 324 mi / 554 km
Range max opt fuel 7000ft/2135m: 599 nm / 690 mi / 1110 km
U/C: Nose wheel
Seats: 2

PA-22 Tri-Pacer
Engine: Lycoming O-320, 160 hp
TBO: 2000 hr
Fuel type: 100
Propeller type: 62-inch, FP Sensenich
Landing gear type: Conv./Fixed
Gross weight: 2000 lb / 908 kg
Empty weight, std: 1150 lb
Useful load, std: 850 lb
Usable fuel, std: 66 Usgals /396 lb
Payload, full std. fuel: 454 lb
Wingspan: 29 ft. 4 in / 8.9 m
Overall length: 20 ft. 4 in / 6.28 m
Height: 6 ft. 1 in
Wing area: 147.5 sq. ft
Wing loading: 13.6 lbs./sq. ft
Power loading: 12.5 lbs./hp
Seating capacity: 2+2
Cabin doors: 2
Cabin width: 40 in
Cabin height: 45 in
Wheel size: 6 x 6 in
Max level speed: 141 mph (226 kph)
Cruise speed, 75% power: 120 kts
Fuel consumption, 75% power: 8 gph
Vso: 42 kt
Best rate of climb, SL: 1000 fpm
Service ceiling: 15,500+ ft
Takeoff ground roll: 1120 ft
Takeoff over 50 ft obstacle: 1600 ft
Landing ground roll: 780 ft
Landing over 50 ft obstacle: 1280 ft

1958 PA-22 Tri-Pacer
Engine: Lycoming O-320-B, 160 hp
TBO: 2000 hr
Propeller: Fixed
Landing gear: Tri/Fixed
Gross weight: 2000 lb
Empty weight, std: 1110 lb
Useful load, std: 890 lb
Fuel: 36 USgal
Wingspan: 29 ft. 3 in
Overall length: 20 ft. 6 in
Height: 8 ft. 4 in.
Wing area: 147.5 sq. ft
Seating capacity: 4
Cabin width: 40 in
Cabin height: 36 in
Baggage capacity: 100 lb
Cruise speed 75% power: 113 kt
Max range (w/ reserve) 75% power: 435 nm
Fuel consumption 75% power: 8 US gph
Stall speed (gear, flaps down): 49 kt
Best rate of climb: 800 fpm
Service ceiling: 16,500 ft
Takeoff ground roll: 1120 ft
Landing ground roll: 500 ft

PA-22-150
Engine: 1 x Avco Lycoming O-320-B, 119kW
Max take-off weight: 907 kg / 2000 lb
Empty weight: 503 kg / 1109 lb
Wingspan: 8.92 m / 29 ft 3 in
Length: 6.28 m / 21 ft 7 in
Height: 2.54 m / 8 ft 4 in
Wing area: 13.7 sq.m / 147.47 sq ft
Max. speed: 227 km/h / 141 mph
Ceiling: 5030 m / 16500 ft
Range: 1054 km / 655 miles

PA22 Caribbean
Seats: 4

PA-22-160 Tri-Pacer

Piper PA-20 Clipper

Originally called ‘Clipper’ but changed to Pacer as PanAm had threatened as lawsuit as the name ‘Clipper’ was registered to them. The Piper Pacer, built 1950-1953 inclusive, evolved from the two-place Vagabond of 1948. As the post-war market developed, Piper recognized the need for a minimum-cost four-placer, and the initial result was the PA-16 Clipper in 1949, which in turn spawned the PA-20 Pacer in 1950.

The Pacer is typical Piper for that period: metal-framed, fabric covered, and easy to fly. It introduced a number of improvements, including a larger area tailplane with balanced elevators, increased fuel capacity, redesigned landing gear and several interior refinements.

The Pacers are taildraggers, and the first ones were powered with the Lycoming O-235-C1 Lycoming of 81kW / 115-hp, designated PA-20 Pacer 115 (TC 1A4), and priced at $3,795. Since this was during the pre-avionics age, not much, if anything, was added to that for radios.

Few of the 115-hp models were produced, however, before the 93kW / 125-hp (Lycoming O-290-D) Pacer 125 was offered, and most Pacer production is accounted for by this model.

The 1952 Pacer 135 introduced a variable-pitch propeller and were fitted with the O-290-D2 rated at 135-hp, but sales dwindled and production was halted in 1953, because the tri-gear version of the Pacer, the PA-22 Tri-Pacer, introduced in 1952, was claiming most of the customers.
In May 1951 Max Conrad set a Transcontinental, non-stop lightplane record of 23h:4m:31s
in a PA-20.

When production ended in 1954 a total of 1,119 had been built, and the PA-20 Pacer 135 could demonstrate a maximum speed of 225km/h and had a range of 933km.

Gallery

Engine: 1 x 93kW Lycoming O-290-D
Max take-off weight: 816 kg / 1799 lb
Wingspan: 8.93 m / 29 ft 4 in
Length: 6.21 m / 20 ft 4 in
Cruise speed: 180 km/h / 112 mph
Range: 933 km / 580 miles
Crew: 1
Passengers: 3