
The majority of PMA parts are produced under licensing agreements.
Credit: Sean Broderick/AW&ST
PMA may be evolving, but it is hardly new. Demand for non-OEM replacement aircraft parts originated in the 1950s, driven largely by the need to support out-of-production aircraft built for World War II that transitioned to civil use. In 1965, Part 21.303 was born, establishing the parts...
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