---
title: "Part V – Test Method to Determine the Smoke Emission Characteristics of Cabin Materials — CS-25 · Avioverse"
description: "Summary of Method. The specimens must be constructed, conditioned, and tested in the flaming mode in accordance with American Society of Testing and…"
url: "https://avioverse.aero/regulations/easa/cs-25/appendices-to-cs-25/part-v-test-method-to-determine-the-smoke-emission-characteristics-of-cabin"
---

# Part V – Test Method to Determine the Smoke Emission Characteristics of Cabin Materials

Large Aeroplanes (CS-25) · CS-25 · EAR revision 26 Jan 2023

IR Implementing rule

## Part V – Test Method to Determine the Smoke Emission Characteristics of Cabin Materials

(a) Summary of Method. The specimens must be constructed, conditioned, and tested in the flaming mode in accordance with American Society of Testing and Materials (ASTM) Standard Test Method ASTM F814-83.

(b) Acceptance Criteria. The specific optical smoke density (Ds) which is obtained by averaging the reading obtained after 4 minutes with each of the three specimens, shall not exceed 200.

IR — CS-25 · ED Decision 2003/2/RM · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

[All rules in APPENDICES TO CS-25](https://avioverse.aero/regulations/easa/cs-25/appendices-to-cs-25)

Consolidated from the EASA Easy Access Rules (revision 26 Jan 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.