---
title: "AMC to Paragraph 1(c) of Appendix III to Part-66 ‘Aircraft Type Training and Examination Standard. On-the-Job Training’ — Part-66 · Avioverse"
description: "Differences Training Approved difference training is not required for different variants within the same aircraft type rating (as specified in Appendix I…"
url: "https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/appendices-to-annex-iii-part-66/amc-to-paragraph-1-c-of-appendix-iii-to-part-66-aircraft-type-training-and"
---

# AMC to Paragraph 1(c) of Appendix III to Part-66 ‘Aircraft Type Training and Examination Standard. On-the-Job Training’

Annex III (Part-66) · Regulation (EU) No 1321/2014 · EAR revision 2 Sep 2025

AMC Acceptable means of compliance

## AMC to Paragraph 1(c) of Appendix III to Part-66 ‘Aircraft Type Training and Examination Standard. On-the-Job Training’

Differences Training

Approved difference training is not required for different variants within the same [aircraft](https://avioverse.aero/glossary/easa/aircraft) type rating (as specified in Appendix I to AMC to Part-66) for the purpose of type rating endorsement on the aircraft [maintenance](https://avioverse.aero/glossary/easa/maintenance) licence.

However, this does not necessarily mean that no training is required before a [certifying staff](https://avioverse.aero/glossary/easa/certifying-staff) authorisation can be issued by the maintenance [organisation](https://avioverse.aero/glossary/easa/organisation) (refer to AMC 66.A.20(b)3).

AMC — Regulation (EU) No 1321/2014 · ED Decision 2015/029/R · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

[All rules in APPENDICES TO ANNEX III (Part-66)](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/appendices-to-annex-iii-part-66)

Consolidated from the EASA Easy Access Rules (revision 2 Sep 2025, extracted 13 Oct 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.