---
title: "CS-E 910 Relighting In Flight — CS-E · Avioverse"
description: "The Engine constructor must recommend an envelope of conditions for Engine relighting in flight, and must substantiate it by appropriate tests or other…"
url: "https://avioverse.aero/regulations/easa/cs-e/subpart-e/cs-e-910-relighting-in-flight"
---

# CS-E 910 Relighting In Flight

Engines (CS-E) · CS-E · EAR revision 7 Dec 2023

IR Implementing rule

## CS-E 910 Relighting In Flight

The Engine constructor must recommend an envelope of conditions for Engine relighting in flight, and must substantiate it by appropriate tests or other evidence. The recommendation must state all the conditions applicable, e.g. altitude, air speed, Engine windmilling rotational speed, whether starter assistance is required, the recommended drill.

IR — CS-E · ED Decision 2003/9/RM · CS-E Easy Access Rules · EAR revision 7 Dec 2023

[All rules in SUBPART E – TURBINE ENGINES: TYPE SUBSTANTIATION](https://avioverse.aero/regulations/easa/cs-e/subpart-e)

Consolidated from the EASA Easy Access Rules (revision 7 Dec 2023, 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.