3 Airworthiness Directives.
AD 52-10-01 · published 1952
Airlift International, Inc., Curtiss-Wright Corporation, Flying Tiger Line, Inc., L. B. Smith Aircraft Corporation, Skyways International Trading and Transport Co., Tempo Design Corporation Airplanes
AD 52-11-02 · published 1952
Kelowna Flightcraft R & D Ltd. Airplanes