---
title: "CAT.IDE.H.335 Audio selector panel — Part-CAT · Avioverse"
description: "Helicopters operated under IFR shall be equipped with an audio selector panel operable from each required flight crew member station."
url: "https://avioverse.aero/regulations/easa/air-ops/part-cat/subpart-d/cat-ide-h-335"
---

# CAT.IDE.H.335 Audio selector panel

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

IR Implementing rule

## CAT.IDE.H.335 Audio selector panel

Helicopters operated under IFR shall be equipped with an audio selector panel operable from each required [flight crew member](https://avioverse.aero/glossary/easa/flight-crew-member) station.

IR · CAT.IDE.H.335 — 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.