---
title: "CS 25.1381 Instrument lights — CS-25 · Avioverse"
description: "The instrument lights must – (1) Provide sufficient illumination to make each instrument, switch and other device necessary for safe operation easily…"
url: "https://avioverse.aero/regulations/easa/cs-25/subpart-f/cs-25-1381"
---

# CS 25.1381 Instrument lights

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

IR Implementing rule

## CS 25.1381 Instrument lights

(a) The instrument lights must –

(1) Provide sufficient illumination to make each instrument, switch and other device necessary for safe operation easily readable unless sufficient illumination is available from another source; and

(2) Be installed so that –

(i) Their direct rays are shielded from the pilot’s eyes; and

(ii) No objectionable reflections are visible to the pilot.

(b) Unless undimmed instrument lights are satisfactory under each expected flight condition, there must be a means to control the intensity of illumination.

IR · CS 25.1381 — CS-25 · ED Decision 2003/2/RM · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

[All rules in SUBPART F – EQUIPMENT](https://avioverse.aero/regulations/easa/cs-25/subpart-f)

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.