---
title: "SPA.HHO.125 Performance requirements for HHO — Part-SPA · Avioverse"
description: "Except for HHO at a HEMS operating site, HHO shall be capable of sustaining a critical engine failure with the remaining engine(s) at the appropriate…"
url: "https://avioverse.aero/regulations/easa/air-ops/part-spa/subpart-i/spa-hho-125"
---

# SPA.HHO.125 Performance requirements for HHO

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

IR Implementing rule

## SPA.HHO.125 Performance requirements for HHO

Except for HHO at a [HEMS operating site](https://avioverse.aero/glossary/easa/hems-operating-site), HHO shall be capable of sustaining a critical engine failure with the remaining engine(s) at the appropriate power setting without hazard to the suspended person(s)/cargo, third parties or property.

IR · SPA.HHO.125 — Regulation (EU) No 965/2012 · Air OPS Easy Access Rules · EAR revision 27 Mar 2026

[All rules in SUBPART I: HELICOPTER HOIST OPERATIONS](https://avioverse.aero/regulations/easa/air-ops/part-spa/subpart-i)

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.