---
title: "CAT.IDE.A.115 Operating lights — Part-CAT · Avioverse"
description: "Aeroplanes operated by day shall be equipped with: an anti-collision light system;"
url: "https://avioverse.aero/regulations/easa/air-ops/part-cat/subpart-d/cat-ide-a-115"
---

# CAT.IDE.A.115 Operating lights

ANNEX IV (Part-CAT) · Regulation (EU) No 965/2012 · EAR revision 27 Mar 2026

IR Implementing rule

## CAT.IDE.A.115 Operating lights

(a) Aeroplanes operated by day shall be equipped with:

(1) an anti-collision light system;

(2) lighting supplied from the [aeroplane](https://avioverse.aero/glossary/easa/aeroplane)’s electrical system to provide adequate illumination for all instruments and equipment essential to the safe operation of the aeroplane;

(3) lighting supplied from the aeroplane’s electrical system to provide illumination in all passenger compartments; and

(4) an independent portable light for each required [crew member](https://avioverse.aero/glossary/easa/crew-member) readily accessible to crew members when seated at their designated stations.

(b) Aeroplanes operated at [night](https://avioverse.aero/glossary/easa/night) shall in addition be equipped with:

(1) navigation/position lights;

(2) two landing lights or a single light having two separately energised filaments; and

(3) lights to conform with the International Regulations for Preventing Collisions at Sea if the aeroplane is operated as a [seaplane](https://avioverse.aero/glossary/easa/seaplane).

IR · CAT.IDE.A.115 — Regulation (EU) No 965/2012 · Air OPS Easy Access Rules · EAR revision 27 Mar 2026

[All rules in SUBPART D: INSTRUMENTS, DATA, EQUIPMENT](https://avioverse.aero/regulations/easa/air-ops/part-cat/subpart-d)

Consolidated from the EASA Easy Access Rules (revision 27 Mar 2026, 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.