Main Menu

Beechcraft 33 Debonair / Bonanza / U-22 / Parastu 14



Despite large demand for the V-tailed Model 35, there were many potential buyers who considered this tail unit to be a gimmick that might present problems. To meet their needs, Beech introduced the Model 33 Debonair, following a first flight on 14 September 1959. With a conventional tail unit, and with a slightly lower-powered engine, the Debonair seated a pilot and three passengers. It represented a lower-cost version of the Bonanza, and was built and marketed in parallel until production of the Debonair, as such, ended in 1966, by when almost 1,200 had been built.

The Model 33 Debonair was produced in four-seat versions with a 225-hp Continental, six-cylinder engine. It had a simplified interior and less elaborate equipment than the Model 35. In 1961, the aileron and elevator trim tabs were improved; larger rear windows and a restyled cabin interior with bucket seats were featured.


Offered by Beechcraft in 1964 for European sale was a Debonair beefed up with a stronger empennage, horizontal stabiliser, rudder cables and vertical stabiliser to meet British requirements for a three-turn spin.


In 1966, the option of a 285-hp powerplant was added.


1960 33 Debonair


In 1967, the Debonair name was dropped and the subsequent aircraft, now a part of the Bonanza family, were simply designated E33, F33 and G33. During these years all model numbers ending in “A” featured the 285-hp Continental. All others retained the 225-hp engine.

The Debonair was replaced in 1967 by the Model E33 Bonanza, a four/five-seat version that was virtually identical to the V-tail Model 35, except for the provision of a conventional tail unit with sweptback vertical surfaces. This version, in F33A standard and F33C aerobatic/utility versions, remained available in late 1989, by which time production of Model 33 Debonairs/Bonanzas was approaching a total of 3,000. Examples of these aircraft have been used for civil or military training by organisations that include the air force of Iran, Lufthansa, the Mexican navy, the Netherlands government, Pacific Southwest Airlines, and the Spanish air ministry/air force.


F33A Bonanza


The Bonanza F33C is an aerobatic version of the Bonanza F33A.

In 1972, the G33 was introduced with a 260-hp Continental. In 1980 only the F-33A remained in production. Since its introduction as the Beechcraft Debonair, more than 2230 Model 33s have been produced. New standard features for all Bonanza models are a 15-degree approach flap setting and a 28-volt electrical system. The approach flaps are identical to the Baron models and will allow for a maximum extension speed of 175 mph. The new elec-trical system speeds up the landing gear cycle and allows Bonanzas to be equipped with propeller deicing. Also, all Bonanzas will offer increased oxygen capacity.


Around 1967 the US military used militarized, supercharged Debonair with increased wingspan and wingtip tanks adapted to surveillance duties in Vietnam, relaying information to tactical fighters and gunships as the U-22. Six, 68-10531/10536, were used as unmanned, radio-controlled drone version as QU-22A, and 69-7699, 70-1535/1548 as -22B.
Beech QU-22B 69-7699
The civil D33 N5847K was used in 1970 by USAF testing in the PAVE COIN program as ground-attack as the YAU-22A 70-7859.


The Islamic Republic of Iran Air Force staff of the logistic-support command repair centre developed the Parastu-14 (Persian: پرستو ۱۴‎) as a training aircraft for the Iranian Air Force from Beechcraft F33 Bonanza.
Parastu 14
Parastu-14 trainer aircraft was introduced during an unveiling ceremony in "Hunting base of Shahid Major General Pilot Hossein Lashgari" in September 2013, and was added to Iran's military air-force.

A33 Debonair

Engine: Continental IO-470-J, 225-hp.
Gross Wt. 2900 lb
Empty Wt. 1730 lb
Wing span: 33.5 ft (10.2m)
Fuel capacity 64 USG
Top speed: 195 mph.
Cruise speed: 185 mph.
Stall: 60 mph.
Initial climb rate: 930 fpm.
Range: 650 sm.
Ceiling: 17,800 ft.
Takeoff distance (50’) 1288 ft.
Landing distance (50’) 1298 ft.
Seats 4/5.

1963 Debonair B33
Engine: Continental IO-470-K, 225 hp
TBO hours: 1500
Fuel type: 80/87
Propeller type: CS
Landing Gear type: Tri./Retr.
Max ramp weight: 3000 lb
Gross weight: 3000 lb
Landing weight: 3000 lb
Empty weight, std: 1745lb
Useful load, std: 1255lb
Usable fuel, std: 74US gal
Payload, full std. fuel: 811 lb
Wingspan: 32 ft. 10 in.
Overall length: 25 ft. 6 in.
Height: 8 ft. 3 in.
Wing area: 177.5 sq. ft
Wing loading: 16.9 lb/sq. ft
Power loading: 13.3 lb/hp
Seating capacity: 4
Cabin doors: 1
Cabin width: 42 in
Cabin height: 50 in
Cruise speed, 6,500 ft 75% pwr: 161 kts
Max range (w/ res) 55% power: 991  nm
Stall speed (flaps up): 62kt
Stall speed (flaps down): 52kt
Best rate of climb, SL: 960 fpm
Service ceiling: 18,400 ft
Takeoff ground roll: 982 ft
Takeoff over 50 ft. obstacle: 1288 ft
Landing ground roll: 643 ft
Landing over 50 ft. obstacle: 1298 ft

1966 Debonair C33A

Engine: Continental IO-520-B, 285 hp
TBO: 1700 hours
Fuel type: 100
Propeller type: CS
Landing Gear type: Tri./Retr.
Max ramp weight: 3300 lb
Gross weight: 3300 lb
Landing weight: 3300 lb
Empty weight, std: 1888lb
Useful load, std: 1412lb
Payload, full std. fuel: 968lb
Usable fuel, std: 74 USgal
Wingspan: 32 ft. 10 in
Overall length: 27 ft. 6 in.
Height: 8 ft. 7 in
Wing area:181 sq. ft
Wing loading: 20.2 lbs./sq. ft
Power loading: 12.2 lbs./hp
Seating capacity: 6
Cabin doors: 2
Cabin width: 3 ft. 6 in.
Cabin height: 4 ft. 2 in.
Cruise speed @ 6,500 ft 75% power: 174 kt
Max range (w/ res) 55% power: 939 nm
Stall speed (flaps up): 63 kt
Stall speed (flaps down): 53kt
Best rate of climb: 1200 fpm
Service ceiling: 18,300 ft
Takeoff ground roll: 880 ft
Takeoff over 50 ft. obstacle: 1225 ft
Landing ground roll: 625 ft
Landing over 50 ft. obstacle: 1150 ft

1968 E33A Bonanza
Engine: Continental IO-520-B/-BA, 285 hp
TBO: 1700 hr
Fuel type: 100/100LL
Propeller type: Hartzell /CS
Landing gear type: Tri./Retr.
Max ramp weight: 3300 lb
Gross weight: 3300 lb
Landing weight: 3300 lb
Empty weight, std: 1915 lb
Useful load, std: 1385 lb
Useful fuel: 80 US gal
Payload, full std. fuel: 945 lb
Wingspan: 32 ft. 10 in.
Overall length: 25 ft. 6 in.
Height: 8 ft. 3 in.
Wing area: 177.6 sq. ft
Wing loading: 18.6 lbs./sq.ft
Power loading: 11.6 lbs./hp
Wheel size: 6.00 x 6 in
Seating capacity: 5
Cruise speed: 75% power: 174 kt
Vso: 53 kt
Best rate of climb, SL: 1200 fpm
Service ceiling: 18,300 ft
Takeoff ground roll: 880 ft
Takeoff over 50-ft. obstacle: 1225 ft
Landing ground roll: 625 ft
Landing over 50-ft. obstacle: 1150  ft

Engine: 1 x Continental IO-520-BB, 285 hp.
TBO: 1700 hrs.
Prop: McCauley 2 blade, constant speed 84 in.
Seats: 4/5.
Length: 26.7 ft.
Height: 8.3 ft.
Wingspan: 33.5 ft.
Wing area: 181sq.ft.
Wing aspect ratio: 6.2.
Max ramp wt: 3412 lb
Max take off wt: 3400 lb
Standard empty wt: 2125 lb
Max useful load: 1287 lb
Max landing wt: 3400 lb
Wing loading: 18.8 lbs/sq.ft.
Power loading: 11.9 lbs/hp.
Max useable fuel: 444 lb
Climb rate: 1167 fpm @ 96 kt
Climb gradient: 729 ft/nm.
Rate of climb @ 8000 ft: 670 fpm.
Service ceiling: 17,858 ft.
Max speed: 182 kts.
Cruise @ 65% power @ 8,000ft: 163 kts.
Fuel flow @ 65% power @ 8,000ft: 80 pph.
Endurance @ 65% power @ 8,000ft: 5.3 hr.
Cruise speed (75% power): 199mph.
Maximum range (75% power): 956mi.
Equipped payload (750 miles fuel, 75% pwr): 895 lb
Stalling speed clean: 64 kts.
Stall speed gear/flaps down: 51 kts
Turbulent air penetration speed: 134 kt
Retractable nose wheel undercarriage
Cabin width (elbow to elbow): 45.0in.


Shorter span wings
Engine: Continental IO-470-N, 260 hp


H33 Bonanza
Engine: Cont. O-470-G, 240hp
Propeller type/diameter: Beechcraft 278 CS/84 in.
Landing Gear type: Tri./Retr.
Gross weight: 2900 lb
Landing weight :2900 lb
Empty weight, std: 2046 lb
Useful load, std: 854lb
Wingspan: 32 ft. 10 in.
Overall length: 25 ft. 1 in.
Height: 6 ft. 6 in.
Wing area:177.6 sq. ft
Power loading: 12.1 lbs./hp
Wheel size, mains: 6.5 x 8 in
Seating capacity: 4
Cabin doors: 1
Baggage capacity: 270 lb
Cruise speed 75% power @ 7500 ft: 165 kt
Cruise speed  65% power @ 11.500 ft.: 160 kt
Cruise speed  55% power @ 12,500 ft.: 150 kt   
Max range (w/ reserve) 75% power @ 7500 ft: 610 nm
Max range (w/ reserve) 65% power @ 11,500 ft: 621 nm
Max range (w/ reserve) 55% power @ 12,500 ft: 665 nm
Fuel consumption (gph @ .42 lbs./hp/hr. sfc) 75% power @ 7500 ft.:13.2
Fuel consumption (gph @ .42 lbs./hp/hr. sfc) 65% power @ 11,500 ft.:11.4
Fuel consumption (gph @ .42 lbs./hp/hr. sfc) 55% power @ 12,500 ft.:9.4
Estimated endurance (65% power with 1-hr. reserve): 3 hrs. 54 mins.
Stall speed (dirty): 50 kts
Best rate of climb: 1250 fpm
Service ceiling: 19,800 ft
Takeoff ground roll: 705 ft
Takeoff over 50 ft. obstacle: 1320 ft
Landing ground roll: 925 ft
Landing over 50 ft. obstacle: 1530 ft


Engine: Continental IO-520-BA, 285 hp
Wing span: 33 ft 6 in / 10.21m
Length: 27 ft 6 in / 8.38m
Cabin length: 10 ft 11 in / 3.39m
Cabin width: 3 ft 6 in / 1.07m
Cabin height: 4 ft 2 in / 1.27m
Empty equipped weight: 2096 lb / 951 kg
MTOW: 3600 lb / 1633 kg
Baggage capacity 400 lb / 181 kg
Max cruise 75% 6500ft/1980m: 170 kt / 196 mph / 315 kph
Max ROC SL: 1015 fpm / 309 m/min
Service ceiling: 16,000 ft / 4875 m
Range 55% at 12,000ft/3660m with opt fuel: 769 nm / 886 mi / 1425 km + res
Seats: 6




A36 Bonanza





Copyright © 2021 all-aero. All Rights Reserved.
Joomla! is Free Software released under the GNU General Public License.