4 Airworthiness Directives.
AD 52-17-01 · published 1952
Bellanca Aircraft Corporation Airplanes
AD 52-17-02 · 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 52-18-01 · 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