---
title: "CS 26.405 Cargo compartment fire protection — ADDITIONAL AIRWORTHINESS SPECIFICATIONS FOR OPERATIONS, Part-26 · Avioverse"
description: "For small helicopters and large helicopters referred to in point 26.405 of Part26, compliance with point 26.405 is demonstrated by providing:"
url: "https://avioverse.aero/regulations/easa/additional-airworthiness/additional-airworthiness-specifications-for/subpart-c/cs-26-405"
---

# CS 26.405 Cargo compartment fire protection

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

IR Implementing rule

## CS 26.405 Cargo compartment fire protection

For small helicopters and large helicopters referred to in point 26.405 of Part26, compliance with point 26.405 is demonstrated by providing:

(a) relevant information on the helicopter design characteristics associated with the cargo compartment fire protection capabilities for which the certificate or design change approval holders had to demonstrate compliance with the certification specifications in the section ‘fire protection’ of Subpart D of CS27 and CS29 respectively or equivalent, as established in the certification basis, and the related acceptable means of compliance;

(b) the reference to the demonstrated specifications established in the certification basis.

\[Issue: 26/5]

IR · CS 26.405 — Regulation (EU) 2015/640 · ED Decision 2024/010/R · Part-26 Easy Access Rules · EAR revision 20 Mar 2026

[All rules in SUBPART C — HELICOPTERS](https://avioverse.aero/regulations/easa/additional-airworthiness/additional-airworthiness-specifications-for/subpart-c)

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.