HomeAD libraryBy monthApril 1959ADs published in April 19594 Airworthiness Directives: 2 airplane, 1 rotorcraft, 1 propeller.March 1959May 1959AirplaneAD 59-08-01 · published 1959Textron Aviation Inc. AirplanesTextron Aviation Inc. AirplanesAD 59-08-02 · published 1959The Boeing Company AirplanesThe Boeing Company AirplanesRotorcraftAD 59-09-04 · published 1959Boeing Defense & Space Group HelicoptersBoeing Defense & Space Group HelicoptersPropellerAD 59-09-03 · published 1959Hartzell Propeller, Inc. PropellersHartzell Propeller, Inc. Propellers
