HomeAD libraryBy monthApril 1951ADs published in April 19514 Airworthiness Directives: 3 airplane, 1 engine.March 1951May 1951AirplaneAD 51-08-03 · published 1951Swift Museum Foundation, Inc. AirplanesSwift Museum Foundation, Inc. AirplanesAD 51-09-02 · published 1951The Boeing Company AirplanesThe Boeing Company AirplanesAD 51-09-03 · published 1951Taylorcraft, Inc., Taylorcraft 2000, LLC AirplanesTaylorcraft, Inc., Taylorcraft 2000, LLC AirplanesEngineAD 51-09-01 · published 1951Pratt & Whitney Division EnginesPratt & Whitney Division Engines
