Turboprop-powered series of the PA-31 light transport aircraft
ThePiper PA-31T Cheyenne is a twin-engineturboprop development of the earlierPA-31P Pressurized Navajo .
Originally, the aircraft was an upgraded version of the Pressurized Navajo equipped with twoPratt & Whitney Canada PT6 A-28turboprop engines. Later, the aircraft was further refined and developed, including aerodynamic improvements and fuselage extensions. The PA-31T led to the development of thePA-42 Cheyenne III and IV .
Government operators [ edit ] Indonesia Mauritania United States PA-31T Cheyenne Initial production version, powered by two 620-shp (462-kW)Pratt & Whitney Canada PT6A -28 turboprop engines Piper PA-31T Cheyenne PA-31T-1 Original designation of the PT-31T Cheyenne I. Powered by 500-shp (373-kW) Pratt & Whitney Canada PT6A-II turboprop engines PA-31T Cheyenne II Improved version, renamed version of original powered by two 620-shp (462-kW)Pratt & Whitney Canada PT6A -28 turboprop engines PA-31T2 Cheyenne IIXL Stretched version, powered by two 750-shp (559-kW) Pratt & Whitney Canada PT6A-135 turboprop engines Data from Jane's All the World's Aircraft 1976–77[ 4]
General characteristics
Crew: 2Capacity: 4–6 passengersLength: 34 ft 8 in (10.57 m)Wingspan: 42 ft8+ 1 ⁄4 in (13.011 m) (over tip tanks)Height: 12 ft 9 in (3.89 m)Wing area: 229 sq ft (21.3 m2 )Airfoil :2 -415 at root, 63A212 at tipEmpty weight: 4,870 lb (2,209 kg)Max takeoff weight: 9,000 lb (4,082 kg)Fuel capacity: 382 US gal (318 imp gal; 1,450 L) usable fuelPowerplant: 2 ×Pratt & Whitney Canada PT6 A-28turboprops , 620 shp (460 kW) eachPropellers: 3-bladed Hartzell HC-BTN-3Bconstant-speed propellers , 7 ft 9 in (2.36 m) diameterPerformance
Maximum speed: 326 mph (525 km/h, 283 kn) at 11,000 ft (3,400 m)Cruise speed: 244 mph (393 km/h, 212 kn) at 25,000 ft (7,600 m) (econ. cruise)Stall speed: 88 mph (142 km/h, 76 kn) (flaps down)Range: 1,702 mi (2,739 km, 1,479 nmi) (econ. cruise, 45 min reserves)Service ceiling: 29,000 ft (8,800 m)Rate of climb: 2,800 ft/min (14 m/s)Takeoff run to 50 ft (15 m): 1,980 ft (600 m)Landing run from 50 ft (15 m): 1,860 ft (570 m)Related development
Aircraft of comparable role, configuration, and era
^ Willis, David, ed. (1999).Aerospace Encyclopedia of World Air Forces . London, UK: Aerospace Publishing Ltd. p. 294.ISBN 1-86184-045-4 ^ "World Air Forces 1987 pg. 72" . flightglobal.com. Retrieved3 April 2019 .^ Tom, Kaminsky (2000).The United States military aviation directory . Airtime Publishing Inc.ISBN 978-1-880588-29-1 ^ Taylor, John W.R. (1976),Jane's All The World's Aircraft 1976–77 , London: Jane's Yearbooks, pp. 358– 359,ISBN 0-354-00538-3
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