---
title: "ORO.TC.125 Differences training — Part-ORO · Avioverse"
description: "Each technical crew member shall complete differences training when changing equipment or procedures on types or variants currently operated."
url: "https://avioverse.aero/regulations/easa/air-ops/part-oro/subpart-tc/oro-tc-125"
---

# ORO.TC.125 Differences training

ANNEX III (Part-ORO) · Regulation (EU) No 965/2012 · EAR revision 27 Mar 2026

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-air-operations) · [EUR-Lex 2012/965 (opens in a new tab)](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32012R0965)

IR Implementing rule

## ORO.TC.125 Differences training

(a) Each [technical crew member](https://avioverse.aero/glossary/easa/technical-crew-member) shall complete differences training when changing equipment or procedures on types or variants currently operated.

(b) The operator shall specify in the operations manual when such differences training is required.

IR · ORO.TC.125 — Regulation (EU) No 965/2012 · Air OPS Easy Access Rules · EAR revision 27 Mar 2026

[All rules in SUBPART TC: TECHNICAL CREW IN HEMS, HHO OR NVIS OPERATIONS](https://avioverse.aero/regulations/easa/air-ops/part-oro/subpart-tc)

Consolidated from the EASA Easy Access Rules (revision 27 Mar 2026, 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.