---
title: "CS 25.1123 Exhaust piping — CS-25 · Avioverse"
description: "For powerplant installations, the following apply: Exhaust piping must be heat and corrosion resistant, and must have provisions to prevent failure due…"
url: "https://avioverse.aero/regulations/easa/cs-25/subpart-e/cs-25-1123"
---

# CS 25.1123 Exhaust piping

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

IR Implementing rule

## CS 25.1123 Exhaust piping

For powerplant installations, the following apply:

(a) Exhaust piping must be heat and corrosion resistant, and must have provisions to prevent failure due to expansion by operating temperatures.

(b) Piping must be supported to withstand any vibration and inertia loads to which it would be subjected in operation; and

(c) Piping connected to components between which relative motion could exist must have means for flexibility.

IR · CS 25.1123 — CS-25 · ED Decision 2003/2/RM · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

[All rules in SUBPART E – POWERPLANT](https://avioverse.aero/regulations/easa/cs-25/subpart-e)

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.