---
title: "CS 25J1025 Oil valves — CS-25 · Avioverse"
description: "Each oil shut-off must meet the requirements of CS 25J1189. Each oil valve must have positive stops or suitable index provisions in the \"on'' and \"off''…"
url: "https://avioverse.aero/regulations/easa/cs-25/subpart-j/cs-25j1025-oil-valves"
---

# CS 25J1025 Oil valves

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

IR Implementing rule

## CS 25J1025 Oil valves

(a) Each oil shut-off must meet the requirements of CS 25J1189.

(b) Each oil valve must have positive stops or suitable index provisions in the "on'' and "off'' positions and must be supported so that no loads resulting from its operation or from accelerated flight conditions are transmitted to the lines attached to the valve, unless adequate strength margins under all loading conditions are provided in the lines and connections.

\[Amdt 25/1]

IR — CS-25 · ED Decision 2005/006/R · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

[All rules in SUBPART J – AUXILIARY POWER UNIT INSTALLATIONS](https://avioverse.aero/regulations/easa/cs-25/subpart-j)

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.