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(Photo by John Shupek copyright © 200x Skytamer Images)

Northrop Alpha 3 “N” Listings Northrop Alpha 4A

Northrop Alpha 4
Single-engine one-place open-cockpit all-metal cargo land monoplane

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Issued ATC 451 on 10 September 1931, the Northrop Alpha 4 included 11 converted aircraft. Conversion of both new Alpha 3s and those previously made over from Alpha 2s for TWA was accomplished in the fall of 1931 at the Northrop factory in Burbank, California. It included the installation of trousered wheel fairings, NACA cowl, battery, electric starter, low-pressure wheels and tires, flares, and new baggage compartments. The resulting pilot-only mail and express planes flew for TWA for four years from 1931 two 1935.

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