---
title: "CAT.POL.H.405 Take-off — Part-CAT · Avioverse"
description: "The take-off mass shall be the lower of: the MCTOM; or (2) the maximum take-off mass specified for a hover in ground effect with all engines operating at…"
url: "https://avioverse.aero/regulations/easa/air-ops/part-cat/subpart-c/cat-pol-h-405"
---

# CAT.POL.H.405 Take-off

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

Official sources: [EASA Easy Access Rules (opens in a new tab)](https://www.easa.europa.eu/en/document-library/easy-access-rules/easy-access-rules-air-operations) · [EUR-Lex 2012/965 (opens in a new tab)](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32012R0965)

IR Implementing rule

## CAT.POL.H.405 Take-off

(a) The [take-off mass](https://avioverse.aero/glossary/easa/take-off-mass) shall be the lower of:

(1) the MCTOM; or

(2) the maximum take-off mass specified for a hover in ground effect with all engines operating at take-off power, or if conditions are such that a hover in ground effect is not likely to be established, the take-off mass specified for a hover out of ground effect with all engines operating at take-off power.

(b) Except as provided in CAT.POL.H.400(b), in the event of an engine failure the [helicopter](https://avioverse.aero/glossary/easa/helicopter) shall be able to perform a [safe forced landing](https://avioverse.aero/glossary/easa/safe-forced-landing).

IR · CAT.POL.H.405 — Regulation (EU) No 965/2012 · Air OPS Easy Access Rules · EAR revision 27 Mar 2026

[All rules in SUBPART C: AIRCRAFT PERFORMANCE AND OPERATING LIMITATIONS](https://avioverse.aero/regulations/easa/air-ops/part-cat/subpart-c)

Consolidated from the EASA Easy Access Rules (revision 27 Mar 2026, extracted 2 Nov 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.