What is the process for validating Federal Aviation Administration (FAA) supplemental type certificates (STCs) for installation on aircraft already registered in an EU Member State?
What is the process for validating Federal Aviation Administration (FAA) supplemental type certificates (STCs) for installation on aircraft already registered in an EU Member State?
Answer
Double check whether the Federal Aviation Administration (FAA) supplemental type certificate (STC) has been validated by the European Union Aviation Safety Agency (EASA) already or is deemed to be validated by EASA (grandfathering of validations done by EU Member States before the establishment of EASA, see FAQ on ‘grandfathered STCs’).
If this is not the case, as per the EASA-FAA Technical Implementation Procedure (TIP), a simplified validation can only be applied, during the import of the aircraft to which the STC is installed. This means that the FAA STC holder has to apply for a normal validation procedure at EASA as outlined here: Steps to Obtain EASA Type Certificate (TC)/Supplemental Type Certificate (STC).
Last updated
27/06/2025