---
title: "NCO.OP.220 Airborne collision avoidance system (ACAS II) — Part-NCO · Avioverse"
description: "When ACAS II is used, pilot-in-command shall apply the appropriate operational procedures and be adequately trained."
url: "https://avioverse.aero/regulations/easa/air-ops/part-nco/subpart-b/nco-op-220"
---

# NCO.OP.220 Airborne collision avoidance system (ACAS II)

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

IR Implementing rule

## NCO.OP.220 Airborne collision avoidance system (ACAS II)

When ACAS II is used, pilot-in-command shall apply the appropriate operational procedures and be adequately trained.

IR · NCO.OP.220 — Regulation (EU) No 965/2012 · Regulation (EU) 2016/1199 · Air OPS Easy Access Rules · EAR revision 27 Mar 2026

[All rules in SUBPART B: OPERATIONAL PROCEDURES](https://avioverse.aero/regulations/easa/air-ops/part-nco/subpart-b)

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.