supplemental type certificate

supplemental type certificate (STC)

A certificate authorizing an alteration to an airframe, engine, or any other component that has been granted an approval type certificate. The U.S. system for the posttype certification approval of aircraft modifications, such as re-engining, STOL (short takeoff and landing) kits, etc., where the full certification process is not deemed necessary. Also used by manufacturers to certify (often greatly changed) new models of old types under so-called grandfather rights.

单词	supplemental type certificate
释义	supplemental type certificate supplemental type certificate (STC) A certificate authorizing an alteration to an airframe, engine, or any other component that has been granted an approval type certificate. The U.S. system for the posttype certification approval of aircraft modifications, such as re-engining, STOL (short takeoff and landing) kits, etc., where the full certification process is not deemed necessary. Also used by manufacturers to certify (often greatly changed) new models of old types under so-called grandfather rights. AcronymsSeeSTC
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