---
title: "CS 25.1527 Ambient air temperature and operating altitude — CS-25 · Avioverse"
description: "The extremes of the ambient air temperature and operating altitude for which operation is allowed, as limited by flight, structural, powerplant…"
url: "https://avioverse.aero/regulations/easa/cs-25/subpart-g/cs-25-1527"
---

# CS 25.1527 Ambient air temperature and operating altitude

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

IR Implementing rule

## CS 25.1527 Ambient air temperature and operating altitude

The extremes of the ambient air temperature and operating altitude for which operation is allowed, as limited by flight, structural, powerplant, functional, or equipment characteristics, must be established.

IR · CS 25.1527 — CS-25 · ED Decision 2003/2/RM · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

[All rules in SUBPART G – OPERATING LIMITATIONS AND INFORMATION](https://avioverse.aero/regulations/easa/cs-25/subpart-g)

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.