Aircraft Technical Leasing – Reviewing STC’s at Lease End
A supplemental type certificate (STC) is a national aviation authority-approved major modification or repair to an existing type of certified aircraft, engine or propeller.
As it adds to the existing type certificate, it is deemed “supplemental”.
In the United States issuance of such certificates is under the purview of the Federal Aviation Administration (FAA); in Europe this is European Aviation Safety Agency (EASA).
STC can be searched for and located on the relevant national aviation authority (NAA) webpages.