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Pilatus PC-6 Porter / Turbo-Porter / UV-20
Fairchild AU-23A Peacemaker


pilatus-pc-6
PC-6/B2-H4


The Pilatus Porter PC-6 first flew on 4 May 1959 and remained in production in 2005. Once marketed as the "Heli-Porter" by Fairchild in the US, this name more accurately describes the type's abilities, although its true success came only after the turboprop engine was introduced to the design from May 1961 onward.

 

Pilat-PC6-01
Porter PC-6/350-H2 HB-FBU

 

Entering production in 1961, the Turbo-Porter light STOL utility transport, derived from the piston-engined Porter, has been built in substantial numbers for both civil and military applications. Operated by the US Army as the UV-20A Chiricahua.

In production since 1985, the 1987 production version of the Turbo-Porter was the PC-6/B2-H4, which has an increased payload. This was achieved by improving the aerodynamic efficiency of the aircraft by fitting new wingtip fairings and an enlarged dorsal fin for increased weights, and is normally fitted with six quickly-removable seats in the main cabin. All PC-6s built since mid-1985 are of the H4 variant. Earlier PC-6/B1-H2s and /B2-H2s can be retrofitted to H4 standard if equipped with an electrical longitudinal trimming system. By mid-1986 456 PC-6s of all models had been delivered to civil and military operators, including those built under licence by Fairchild, as the AU-24 Peacemaker, in the USA.

 

The Credible Chase programme, an off-shoot of Pave Coin, in which a number of aircraft were evaluated by the USAAF at Eglin AFB in order to come up with a new light-strike attack aircraft for the South Vietnamese Air Force, resulted in a 15-each order for the Helio Stallion and Fairchild Peacemaker. These aircraft, carrying the designa-tions AU-24 and AU-23 respectively, are militarised versions of their commercial counterparts, but have in-creased gross weights, underwing and fuselage hardpoints and Gatling guns firing from the cabin doors.

Fairchild production of Pilatus Turbo-Porters begun June 1966; 15 of COIN version delivered to USAF as AU-23A Peacemaker, transferred to Royal Thai Air Force.

The PC-6/B1-H2 and B2-H4 were certified under Switzerland Federal Office for Civil Aviation FOCA F 56-10.

More than 480 PC-6s had been delivered by 1990.

PC-6 Porter
Engine: GSO-480, 340 hp.

PC-6 Turbo-Porter

Engine: 1 x P&WAC PT6A, 410 kW.    
Wing span: 15.87 m / 52.07 ft
Wing area: 30.15 sq.m / 324.54 sq.ft
Overall length: 10.90 m / 35.76 ft    
Height: 3.20 m / 10.50 ft    
Track: 3.00 m
Empty wt: 1270 kg.
MTOW: 2880 kg
Payload: 960 kg.
Fuel internal: 645 (+490) lt
Capacity: 10 pax.
Design diving speed (VD):    167 kt
Never exceed speed (VNE): 151 kt    
Design cruising speed (VC): 119 kt
Max. flap extended speed (VFE): 95 kt
Stall speed (idle power) flaps up (VS): 58 kt
Stall (idle power) flaps dn (VSO): 52 kt
Max. operating altitude: 25,000 ft
Service ceiling (at max. weight): 20,500 ft
Max. rate of climb at sea level: 1,010 ft/min
Max. rate of climb at 5,000 ft: 935 ft/min
Take-off ground roll at sea level: 197 m / 646 ft    
Take-off dist to 15 m (50 ft): 475 m / 1,558 ft
Landing ground roll at sea level: 127 m / 417 ft
Landing distance from 15 m (50 ft): 315 m / 1,033 ft
Take-off ground roll at sea level: 197 m / 646 ft
Take-off distance to 15 m (50 ft): 440 m / 1,443 ft
Max. Range at opt. speed, no reserves, at 10,000 ft: 500 nm
Endurance at opt. speed, no reserves: 4 h 20 min
Max range with underwing tanks: 870 nm
Endurance with underwing tanks: 7 h 35 min
Average fuel consumption: 148 litres/h (39 US gal/h)

PC-6A-H2
Engine: Turbomeca Astazou IIE turboprop, 523 shp.

PC-6-B1-H2
Engine: P&W PT6A-20, 550 shp.

PC 6 B2 Turbo Porter
Engine : Pratt & Whittney PT A-27
Length: 36.089 ft / 11.0 m
Height : 10.499 ft / 3.2 m
Wingspan : 49.869 ft / 15.2 m
Wing area : 310.003 sq.ft / 28.8 sq.m
Max take off weight : 6107.9 lb / 2770.0 kg
Weight empty : 2932.7 lb / 1330.0 kg
Max. weight carried : 3175.2 lb / 1440.0 kg
Max. speed : 132 kt / 244 km/h
Initial climb rate : 1968.5 ft/min / 10.0 m/s
Service ceiling : 32808 ft / 10000 m
Wing load : 19.68 lb/sq.ft / 96.0 kg/sq.m
Range : 721 nm / 1336 km
Endurance : 6 h
Crew : 1+7

PC-6/B2-H2
Engine: P&WAC PT6A-27, 550 hp / 507kW
Wingspan: 15.87 m / 52 ft 1 in
Length: 10.9 m / 36 ft 9 in
Height: 3.2 m / 11 ft 6 in
Wing area: 30.15 sq.m / 324.53 sq ft
Wing loading: 15.57 lb/sq.ft
Pwr loading: 8.8 lb/hp.
Gross wt: 4850 lb
Empty wt: 2680 lb.
Equipped useful load: 1973 lb
Payload max fuel: 851 lb.
Range max fuel/cruise: 388 nm/2.9 hr
Range max fuel / range: 461 nm/ 3.6 hr.
Service ceiling: 30,000 ft
Max cruise: 135 kt.
Max range cruise: 130 kt
Stall: 44-50 kt.
1.3 Vso: 57 kt
ROC: 1270 fpm.
Min field length: 770 ft
Fuel cap: 1122 lb.
Seats: 11.

PC-6-B2-H4
Engine: PT6A-27, 680 shp (508 kW) flat-rated at 550 shp (410 kW).
Wing area: 29sq.m.
MTOW Std: 4850 lb
MTOW Special cat: 6000 lb
Cruise: 120-135 kt
Stall: 44-50 kt.
TO run: 370 ft
TO 50 ft: 780 ft
Range (@4850 lb): 450 nm
Payload: 2000 lb.
Pax cap: 11

pilatus-pc6-ld

Pilatus PC-6 Porter, Turbo-Porter

 

 


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