If you wish to contribute or participate in the discussions about articles you are invited to join SKYbrary as a registered user
Supplementary Type Certificate (STC)
From SKYbrary Wiki
(Redirected from Supplementary Type Certificate (STC))
Supplemental Type Certificate (STC)
An approval to carry out an aircraft type modification which is deemed by the Airworthiness Authority concerned to be a sufficient change to the original design of an aircraft type to require a specific validation. For example, an operator might wish to install an in-flight entertainment (IFE) system on their aircraft, which would involve complicated modifications to the electricity supply system on an aircraft. Alternatively called a Supplemental Type Certificate (STC).