EASA publishes a list of its approved STCs on the EASA website.
The EASA STC list compiles Supplemental Type Certificates issued by EASA since 03/06/2004 and is updated on a weekly basis.
STCs issued before this date or grandfathered STCs are not included in the list.
To request a copy of an STC, please contact stc [at] easa [dot] europa [dot] eu.
Please also refer to our FAQ on “Who do I contact to request a copy of a grandfathered STC?””