Northrop Alpha

Mail and Passenger Aircraft

Northrop 4A Alpha, TWA - Transcontinental and Western Air, NC11Y, 12, c/n 3, Nat © Karsten Palt
Photo ©: Karsten Palt
The Northrop Alpha is a single-engine seven-seat mail and passenger aircraft produced by the American manufacturer Northrop Aircraft Corporation.
The Alpha was Northrop?s first series production aircraft. The Alpha 2 is a six passenger version, the Alpha 3 has two or three passenger seats, the Alpha 4 is an all cargo version. The Alpha in military service was designated YC-19 / Y1C-19.
Propulsion1 Radial Engine
Engine ModelPratt & Whitney R-1340-C1 Wasp
Engine Power313 kW420 hp
max. Cruise Speed233 km/h126 kts
  145 mph
Speed274 km/h148 kts
  170 mph
Service Ceiling5.883 m19.300 ft
Rate of climb427 m/min1400 ft/min
Empty Weight2.590 kg5.710 lbs
max. Takeoff Weight4.500 kg9.921 lbs
Wing Span12,75 m41 ft 10 in
Wing Area27,4 m295 ft
Length8,65 m28 ft 5 in
Height2,74 m8 ft 12 in
First Flight1930
Production Statusout of production
Production Range1930-1931
Total Production17
Data for (Version)Northrop Alpha 2

[Photo-ID: 10174] Karsten Palt 2014-05-28
Northrop 4A Alpha, TWA - Transcontinental and Western Air, NC11Y, c/n 3, Karsten Palt, 2014Northrop
4A Alpha
TWA - Transcontinental and Western Air
Reg.: NC11Y
c/n: 3
last existing Northrop Alpha
National Air and Space Museum [Washington, DC]