1941 Civil Aeronautics Admin Aircraft Airworthiness Bulletin CAA Aviation WWII For Sale

For sale is a January 8, 1941 Department of Commerce Civil Aeronautics Administration Certificate and Inspection Division Release No. 36 from Washington regarding improvement of engine idling characteristics in flight for 4 cylinder horizontal opposed engines. Prepared by Aircraft Airworthiness Section, signed by John F. Warlick, Acting Chief. Multi-page technical bulletin with airworthiness maintenance information for various aircraft models. Pre-WWII aviation document.

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