---
title: "CS 26.300(c) 26.330(c) and (d) Substantiation of change and repair status — ADDITIONAL AIRWORTHINESS SPECIFICATIONS FOR OPERATIONS, Part-26 · Avioverse"
description: "Compliance with points 26.300(c), 26.330(c) and 26.330(d) of Part-26 is demonstrated by complying with points (a) or (b) of this CS:"
url: "https://avioverse.aero/regulations/easa/additional-airworthiness/additional-airworthiness-specifications-for/subpart-b/cs-26-300-c"
---

# CS 26.300(c) 26.330(c) and (d) Substantiation of change and repair status

ADDITIONAL AIRWORTHINESS SPECIFICATIONS FOR OPERATIONS · Regulation (EU) 2015/640 · EAR revision 20 Mar 2026

IR Implementing rule

## CS 26.300(c) 26.330(c) and (d) Substantiation of change and repair status

Compliance with points 26.300(c), 26.330(c) and 26.330(d) of Part-26 is demonstrated by complying with points (a) or (b) of this CS:

(a) The change or repair is only applicable to an aeroplane that is demonstrated to be excluded from the ageing aeroplane requirements for damage tolerance in accordance with points 26.300(b) or 26.330(b) of Part-26.

(b) Evidence is provided showing that the change or repair is only incorporated into aeroplanes not in operation after:

(1) 26 February 2022 for demonstration of compliance with point 26.300(c) of Part-26; or

(2) 26 August 2022 for demonstration of compliance with point 26.330(c) of Part-26, and it is demonstrated that such change or repair will not be incorporated into any other aeroplanes.

\[Issue: 26/3]

IR · CS 26.300(c) — Regulation (EU) 2015/640 · ED Decision 2020/023/R · Part-26 Easy Access Rules · EAR revision 20 Mar 2026

[All rules in SUBPART B — AEROPLANES](https://avioverse.aero/regulations/easa/additional-airworthiness/additional-airworthiness-specifications-for/subpart-b)

Consolidated from the EASA Easy Access Rules (revision 20 Mar 2026, 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.