Did you know?…
Aircraft manufacturers must obtain a Type Certificate (TC) in order to go into production and sell their aircraft to the market. When you need to modify an aircraft already type certificated, there are times that you will be required to prove that your “mod” will not negatively affect the original Type Certificate. You will also need to prove that your modification meets the latest design standards.
This additional approval requirement is what we call the STC Process – a Supplemental approval to the original Type Certificate, or STC.