---
title: "26.309 Repair evaluation guidelines — ADDITIONAL AIRWORTHINESS SPECIFICATIONS FOR OPERATIONS, Part-26 · Avioverse"
description: "A holder of a TC or a restricted TC for a large aeroplane certified on or after 1 January 1958 and certified to carry 30 passengers or more, or with a…"
url: "https://avioverse.aero/regulations/easa/additional-airworthiness/additional-airworthiness-specifications-for/subpart-b/26-309"
---

# 26.309 Repair evaluation guidelines

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

IR Implementing rule

## 26.309 Repair evaluation guidelines

(a) A holder of a TC or a restricted TC for a [large aeroplane](https://avioverse.aero/glossary/easa/large-aeroplane) certified on or after 1 January 1958 and certified to carry 30 passengers or more, or with a payload capacity of 3 402 kg (7 500 lb) or more, and for which the TC or restricted TC was issued before 11 January 2008, shall develop repair evaluation guidelines (REGs) to establish:

(i) a process for conducting surveys of affected aeroplanes that enables the identification and documentation of all existing repairs affecting the fatigue-critical structures identified in accordance with point 26.306(a) and point 26.307(a)(ii);

(ii) a process that enables operators and organisations responsible for the management of continuing airworthiness to obtain a DTI for repairs identified in accordance with point (i);

(iii) an implementation schedule that provides time frames for conducting aeroplane surveys, obtaining DTIs and incorporating DTIs into the maintenance programme of the aeroplane.

(b) The holder of a TC or a restricted TC shall submit the REGs developed in accordance with point (a) to the Agency before 26 February 2023, for approval.

IR · 26.309 — Regulation (EU) 2015/640 · Regulation (EU) 2024/2954 · 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.