---
title: "CS 25J1337 APU instruments — CS-25 · Avioverse"
description: "Reserved (b) Reserved (c) Reserved (d) There must be a stick gauge or equivalent means to indicate the quantity of oil in each tank."
url: "https://avioverse.aero/regulations/easa/cs-25/subpart-j/cs-25j1337-apu-instruments"
---

# CS 25J1337 APU instruments

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

IR Implementing rule

## CS 25J1337 APU instruments

(a) Reserved

(b) Reserved

(c) Reserved

(d) There must be a stick gauge or equivalent means to indicate the quantity of oil in each tank.

\[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.