HomeAD libraryBy monthDecember 1952ADs published in December 19524 Airworthiness Directives.November 1952January 1953AirplaneAD 52-25-01 · published 1952The Boeing Company AirplanesThe Boeing Company AirplanesAD 52-25-02 · published 1952Univair Aircraft Corporation AirplanesUnivair Aircraft Corporation AirplanesAD 52-26-01 · published 1952Sierra Hotel Aero, Inc. AirplanesSierra Hotel Aero, Inc. AirplanesAD 52-27-02 · published 1952The Boeing Company AirplanesThe Boeing Company Airplanes
