---
title: "ANNEX IV (Part-CAT) — Air Operations · Avioverse"
description: "ANNEX IV (Part-CAT) of Air Operations (Regulation (EU) No 965/2012): 4 subparts of implementing rules, AMC and GM, each paragraph cited to EAR revision…"
url: "https://avioverse.aero/regulations/easa/air-ops/part-cat"
---

EASA Easy Access Rules

# ANNEX IV (Part-CAT)

Air Operations Regulation (EU) No 965/2012 4 subparts EAR revision 27 Mar 2026

Scope extract · [CAT.POL.H.100](https://avioverse.aero/regulations/easa/air-ops/part-cat/subpart-c/cat-pol-h-100)

> (a) Helicopters shall be operated in accordance with the applicable performance class requirements. (b) Helicopters shall be operated in performance class 1: (1) when operated to/from aerodromes or operating sites located in a congested hostile environment, except when operated to/from a public interest site (PIS) in accordance with CAT.POL.H.225; or

IR · CAT.POL.H.100 — Regulation (EU) No 965/2012 · Air OPS Easy Access Rules · EAR revision 27 Mar 2026

- [SUBPART A: GENERAL REQUIREMENTS CAT.GEN.100 – CAT.GEN.MPA.220](https://avioverse.aero/regulations/easa/air-ops/part-cat/subpart-a)
- [SUBPART B: OPERATING PROCEDURES CAT.OP.MPA.100 – CAT.OP.MPA.320](https://avioverse.aero/regulations/easa/air-ops/part-cat/subpart-b)
- [SUBPART C: AIRCRAFT PERFORMANCE AND OPERATING LIMITATIONS CAT.POL.A.100 – CAT.POL.MAB.110](https://avioverse.aero/regulations/easa/air-ops/part-cat/subpart-c)
- [SUBPART D: INSTRUMENTS, DATA, EQUIPMENT CAT.IDE.A.100 – CAT.IDE.H.355](https://avioverse.aero/regulations/easa/air-ops/part-cat/subpart-d)