---
title: "CS 23.2540 Flight in icing conditions — CS-23 · Avioverse"
description: "An applicant who requests certification for flight in icing conditions must show the following in the icing conditions for which certification is…"
url: "https://avioverse.aero/regulations/easa/cs-23/subpart-f/cs-23-2540"
---

# CS 23.2540 Flight in icing conditions

Normal-Category Aeroplanes (CS-23) · CS-23 · EAR revision 13 May 2026

IR Implementing rule

## CS 23.2540 Flight in icing conditions

An applicant who requests certification for flight in icing conditions must show the following in the icing conditions for which certification is requested:

(a) the ice protection system provides for safe operation; and

(b) the aeroplane design must provide protection from stalling when the autopilot is operating.

IR · CS 23.2540 — CS-23 · ED Decision 2017/013/R · CS-23 Easy Access Rules · EAR revision 13 May 2026

AMC Acceptable means of compliance

## AMC1 23.2540 Flight in icing conditions

ASTM F44 F3264 Standard Specification for Normal Category Aeroplanes Certification

9.9 Flight in Icing Conditions

F3061/F3061M-24a Standard Specification for Systems and Equipment in Small Aircraft F3233/F3233M-23b Standard Specification for Flight and Navigation Instrumentation in Aircraft F3120/F3120M-20 Standard Specification for Ice Protection for General Aviation Aircraft \[AMC & GM to CS-23: Issue 4]

\[AMC & GM to CS-23: Issue 5]

AMC · AMC1 23.2540 — CS-23 · ED Decision 2026/003/R · CS-23 Easy Access Rules · EAR revision 13 May 2026

AMC Acceptable means of compliance

## AMC2 23.2540 Flight in icing conditions

CS-23 Amdt 4

23.1323 Airspeed indicating system

23.1325(b), (g) Static pressure system

23.775(f) Windshields and windows

Remarks

Following the cancellation of FAA AC-1419-2D, applicants should now use the icing conditions that are outlined in AMC1 23.2165.

AMC · AMC2 23.2540 — CS-23 · ED Decision 2023/002/R · CS-23 Easy Access Rules · EAR revision 13 May 2026

AMC Acceptable means of compliance

## AMC3 23.2540 Flight in icing conditions

None

AMC · AMC3 23.2540 — CS-23 · ED Decision 2017/025/R · CS-23 Easy Access Rules · EAR revision 13 May 2026

[All rules in SUBPART F — SYSTEMS AND EQUIPMENT](https://avioverse.aero/regulations/easa/cs-23/subpart-f)

Consolidated from the EASA Easy Access Rules (revision 13 May 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.