Maintenance data
Every task is performed using applicable, current maintenance data (145.A.45): manufacturer manuals, airworthiness directives, approved data. The task is recorded as it progresses.
The CRS
The certificate of release to service (CRS) is issued by appropriately authorised certifying staff once all requested maintenance has been properly carried out (145.A.50). For a component, release is documented on the EASA Form 1.
Good practices
- One signature = one task actually performed or checked.
- Record the reference and revision of the data used.
- Never sign for a colleague or in advance.
- Report any unfinished task at handover.
Frequently asked questions
What does APRS mean in French paperwork?
APRS (approbation pour remise en service) is the French term for the CRS (Certificate of Release to Service).
General information only. It does not replace the EASA regulatory texts, your organisation's exposition (MOE/MTOE) or the instructions of your competent authority.