---
title: "Appendix IV EASA Form 53B — Certificate of release to service — Annex Ib, Initial Airworthiness · Avioverse"
description: "Appendix IV Certificate of release to service — EASA Form 53B CERTIFICATE OF RELEASE TO SERVICE [PRODUCTION ORGANISATION NAME] Production organisation…"
url: "https://avioverse.aero/regulations/easa/initial-airworthiness/annex-ib/appendices-to-annex-ib-part-21-light/appendix-iv"
---

# Appendix IV EASA Form 53B — Certificate of release to service

Annex Ib · Regulation (EU) No 748/2012 · EAR revision 27 Nov 2025

Official sources: [EASA Easy Access Rules (opens in a new tab)](https://www.easa.europa.eu/en/document-library/easy-access-rules/easy-access-rules-initial-airworthiness-and-environmental) · [EUR-Lex 2012/748 (opens in a new tab)](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32012R0748)

Appendix Appendix

## Appendix IV EASA Form 53B — Certificate of release to service

Appendix IV

Certificate of release to service — EASA Form 53B

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| CERTIFICATE OF RELEASE TO SERVICE \[PRODUCTION ORGANISATION NAME] Production organisation reference: Certificate of release to service in accordance with 21L.A.126(e) or 21L.A.273(8) of Annex Ib ([Part 21 Light](https://avioverse.aero/glossary/easa/part-21-light)) to Regulation (EU) No 748/2012 (delete as appropriate). Aircraft: ………………...Type: ………………...…Constructor No/Registration: ……………...…………. has been maintained as specified in work order: …………………………………………………………….. Brief description of work performed: Certifies that the work specified was carried out in accordance with 21L.A.126(e) or 21L.A.273(8) of Annex Ib (Part 21 Light) to Regulation (EU) No 748/2012 (delete as appropriate) and in respect to that work the aircraft is considered ready for release to service and therefore is in a condition for safe operation. Certifying staff (name): (signature): Location: Date: . . - . . - . . . . (day, month, year) |

EASA Form 53B — Issue 1

COMPLETION INSTRUCTIONS

The Block BRIEF DESCRIPTION OF WORK PERFORMED appearing in EASA FORM 53B should include a reference to the approved data used to perform the work.

The Block LOCATION appearing in EASA FORM 53B refers to the location where the maintenance has been performed, not to the location of the facilities of the organisation (if different).

APPENDIX · Appendix IV — Regulation (EU) No 748/2012 · Regulation (EU) 2022/1358 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

[All rules in Appendices to ANNEX Ib (Part 21 Light)](https://avioverse.aero/regulations/easa/initial-airworthiness/annex-ib/appendices-to-annex-ib-part-21-light)

Consolidated from the EASA Easy Access Rules (revision 27 Nov 2025, extracted 2 Nov 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.