|Cunningham-Hall PT-6F freighter preserved in a collection in 2006|
|Role||Six-seat cabin biplane|
|Manufacturer||Cunningham-Hall Aircraft Corporation|
Development and design
The Cunningham-Hall Aircraft Corporation was formed in 1928 and the first design was the PT-6, which first flew on April 3, 1929. The PT-6 was a biplane of all-metal construction with a fixed landing gear with tail skid. The cockpit held a pilot and either a copilot or passenger, with a separate cabin for four passengers. The aircraft was powered by a 300 hp (224kW) Wright J-6 Whirlwind radial engine. Two PT-6 aircraft were built.
The company's last design was a freighter conversion the PT-6F. First flown in 1937, the original passenger cabin was modified as a cargo compartment with 156 ft³ (4.42m³) of stowage space. A freight door was fitted to the fuselage and a loading hatch fitted in the roof. It was powered by a Wright R-975E-1 radial engine. An airworthy PT-6F is currently (2008) in a private collection at Anoka County-Blaine Airport, near Minneapolis.
- Six-seat cabin biplane powered by a 300hp (224kW) Wright J-6 Whirlwind radial engine, two built.
- Freighter conversion of the PT-6.
Data from The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985)
- Crew: Two
- Length: 30 ft 0 in (9.14 m)
- Wingspan: 41 ft 8 in (12.7 m)
- Height: 9 ft 7 in (2.92 m)
- Wing area: 370 ft² (34.37 m²)
- Empty weight: 2,875 lb (1304 kg)
- Max. takeoff weight: 4,550 lb (2064 kg)
- Powerplant: 1 × Wright R-975E-1 Whirlwind radial engine, 365hp (272 kW)
- Maximum speed: 150 mph (241 km/h)
- Range: 700 miles (1127 km)
- Service ceiling: 20,000 ft (6095 m)
- Wing loading: lb/ft² (kg/m²)
- Power/mass: hp/lb (W/kg)
- The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing.