6 Airworthiness Directives: 5 airplane, 1 propeller.
AD 59-01-01 · published 1959
Kelowna Flightcraft R & D Ltd. Airplanes
AD 59-01-02 · published 1959
de Havilland Aircraft Co., Ltd., The Airplanes
AD 59-02-01 · published 1959
Kelowna Flightcraft R & D Ltd. Airplanes
AD 59-03-02 · published 1959
Lockheed Aircraft Corporation Airplanes