---
title: "SPO.POL.135 En-route – one engine inoperative – complex motor-powered aeroplanes — Part-SPO · Avioverse"
description: "The pilot-in-command shall ensure that in the event of an engine becoming inoperative at any point along the route, a multi-engined aeroplane shall be…"
url: "https://avioverse.aero/regulations/easa/air-ops/part-spo/subpart-c/spo-pol-135"
---

# SPO.POL.135 En-route – one engine inoperative – complex motor-powered aeroplanes

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

IR Implementing rule

## SPO.POL.135 En-route – one engine inoperative – complex motor-powered aeroplanes

The pilot-in-command shall ensure that in the event of an engine becoming inoperative at any point along the route, a multi-engined [aeroplane](https://avioverse.aero/glossary/easa/aeroplane) shall be able to continue the flight to an [adequate aerodrome](https://avioverse.aero/glossary/easa/adequate-aerodrome) or [operating site](https://avioverse.aero/glossary/easa/operating-site) without flying below the minimum obstacle clearance altitude at any point.

IR · SPO.POL.135 — Regulation (EU) No 965/2012 · Regulation (EU) No 379/2014 · 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-spo/subpart-c)

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.