---
title: "CS 26.157 Conversion of Class D compartments — ADDITIONAL AIRWORTHINESS SPECIFICATIONS FOR OPERATIONS, Part-26 · Avioverse"
description: "Compliance with point 26.157(a) of Part-26 is demonstrated by showing compliance with CS 25.857(c) and CS 25.858, or the equivalent."
url: "https://avioverse.aero/regulations/easa/additional-airworthiness/additional-airworthiness-specifications-for/subpart-b/cs-26-157"
---

# CS 26.157 Conversion of Class D compartments

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

IR Implementing rule

## CS 26.157 Conversion of Class D compartments

(a) Compliance with point 26.157(a) of Part-26 is demonstrated by showing compliance with CS 25.857(c) and CS 25.858, or the equivalent.

(b) Compliance with point 26.157(b) of Part-26 is demonstrated by showing compliance with:

(1) either CS 25.857(c) and CS 25.858, or the equivalent; or

(2) CS 25.857(e) and CS 25.858, or the equivalent.

\[Issue: 26/3]

IR · CS 26.157 — 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.