---
title: "CS-E 470 Contaminated Fuel — CS-E · Avioverse"
description: "(See AMC E 470) Evidence shall be provided that the complete Engine fuel system is capable of operating without Engine malfunctioning under any likely…"
url: "https://avioverse.aero/regulations/easa/cs-e/subpart-c/cs-e-470-contaminated-fuel"
---

# CS-E 470 Contaminated Fuel

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

IR Implementing rule

## CS-E 470 Contaminated Fuel

(See AMC E 470)

Evidence shall be provided that the complete Engine fuel system is capable of operating without Engine malfunctioning under any likely quantities of solid contaminant, water and ice present in the fuel. If compliance relies upon fuel anti-icing additive(s) or other means incorporated in the aircraft fuel system, this shall be declared under CS-E 30 together with a statement of the conditions under which use of additive(s) is approved.

\[Amdt. No.: E/1]

IR — CS-E · ED Decision 2007/015/R · CS-E Easy Access Rules · EAR revision 7 Dec 2023

[All rules in SUBPART C — PISTON ENGINES, TYPE SUBSTANTIATION](https://avioverse.aero/regulations/easa/cs-e/subpart-c)

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.