---
title: "CS-E 120 Identification — CS-E · Avioverse"
description: "The Engine identification must comply with points 21.A.801(a) and (b), and point 21.A.805 of Part 21."
url: "https://avioverse.aero/regulations/easa/cs-e/subpart-a/cs-e-120-identification"
---

# CS-E 120 Identification

Engines (CS-E) · CS-E · EAR revision 7 Dec 2023

IR Implementing rule

## CS-E 120 Identification

(a) The Engine identification must comply with points 21.A.801(a) and (b), and point 21.A.805 of Part 21.

(b) Major Engine modules that can be changed independently in service must be suitably identified so as to ensure traceability of parts and to enable proper control over the interchangeability of such modules with different Engine variants.

IR — CS-E · ED Decision 2003/9/RM · CS-E Easy Access Rules · EAR revision 7 Dec 2023

[All rules in SUBPART A – GENERAL](https://avioverse.aero/regulations/easa/cs-e/subpart-a)

Consolidated from the EASA Easy Access Rules (revision 7 Dec 2023, 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.