---
title: "Appendix F to CS-26 — ADDITIONAL AIRWORTHINESS SPECIFICATIONS FOR OPERATIONS, Part-26 — rule index · Avioverse"
description: "Appendix F to CS-26 (5 paragraphs), Regulation (EU) 2015/640. Refer to CS-25 Appendix F Part I initial issue or later amendments."
url: "https://avioverse.aero/regulations/easa/additional-airworthiness/additional-airworthiness-specifications-for/appendix-f"
---

# Appendix F to CS-26

ADDITIONAL AIRWORTHINESS SPECIFICATIONS FOR OPERATIONS · Additional Airworthiness Specifications · Regulation (EU) 2015/640

1. ## [Part l — Test Criteria and Procedures](https://avioverse.aero/regulations/easa/additional-airworthiness/additional-airworthiness-specifications-for/appendix-f/part-l-test-criteria-and-procedures)

   Refer to CS-25 Appendix F Part I initial issue or later amendments.

2. ## [Part II — Flammability of Seat Cushions](https://avioverse.aero/regulations/easa/additional-airworthiness/additional-airworthiness-specifications-for/appendix-f/part-ii-flammability-of-seat-cushions)

   Refer to CS-25 Appendix F Part II initial issue or later amendments.

3. ## [Part III — Test Method to Determine Flame Penetration Resistance of Cargo Compartment Liners](https://avioverse.aero/regulations/easa/additional-airworthiness/additional-airworthiness-specifications-for/appendix-f/part-iii-test-method-to-determine-flame-penetration-resistance-of-cargo)

   Refer to CS-25 Appendix F Part III initial issue or later amendments.

4. ## [Part IV — Test Method to Determine the Heat Release Rate From Cabin Materials Exposed to Radiant Heat](https://avioverse.aero/regulations/easa/additional-airworthiness/additional-airworthiness-specifications-for/appendix-f/part-iv-test-method-to-determine-the-heat-release-rate-from-cabin-materials)

   Refer to CS-25 Appendix F Part IV initial issue or later amendments.

5. ## [Part V — Test Method to Determine the Smoke Emission Characteristics of Cabin Materials](https://avioverse.aero/regulations/easa/additional-airworthiness/additional-airworthiness-specifications-for/appendix-f/part-v-test-method-to-determine-the-smoke-emission-characteristics-of-cabin)

   Refer to CS-25 Appendix F Part V initial issue or later amendments.

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.

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