HomeAD libraryBy monthJanuary 1955ADs published in January 19553 Airworthiness Directives: 2 airplane, 1 engine.December 1954February 1955AirplaneAD 55-01-01 · published 1955Sierra Hotel Aero, Inc. AirplanesSierra Hotel Aero, Inc. AirplanesAD 55-03-01 · published 1955Kelowna Flightcraft R & D Ltd. AirplanesKelowna Flightcraft R & D Ltd. AirplanesEngineAD 55-02-02 · published 1955Lycoming Engines EnginesLycoming Engines Engines
