---
title: "CAT.IDE.A.170 Flight crew interphone system — Part-CAT · Avioverse"
description: "Aeroplanes operated by more than one flight crew member shall be equipped with a flight crew interphone system, including headsets and microphones for…"
url: "https://avioverse.aero/regulations/easa/air-ops/part-cat/subpart-d/cat-ide-a-170"
---

# CAT.IDE.A.170 Flight crew interphone system

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

IR Implementing rule

## CAT.IDE.A.170 Flight crew interphone system

Aeroplanes operated by more than one [flight crew member](https://avioverse.aero/glossary/easa/flight-crew-member) shall be equipped with a flight crew interphone system, including headsets and microphones for use by all flight crew members.

IR · CAT.IDE.A.170 — Regulation (EU) No 965/2012 · Air OPS Easy Access Rules · EAR revision 27 Mar 2026

AMC Acceptable means of compliance

## AMC1 CAT.IDE.A.170 Flight crew interphone system

TYPE OF FLIGHT CREW INTERPHONE

The flight crew interphone system should not be of a handheld type.

AMC · AMC1 CAT.IDE.A.170 — Regulation (EU) No 965/2012 · ED Decision 2014/015/R · 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.