---
title: "SUBPART B — PISTON ENGINES: DESIGN AND CONSTRUCTION — CS-E — rule index · Avioverse"
description: "SUBPART B — PISTON ENGINES: DESIGN AND CONSTRUCTION (9 paragraphs), CS-E. (See AMC E 210) (a) A Failure analysis of the Engine, including the control…"
url: "https://avioverse.aero/regulations/easa/cs-e/subpart-b"
---

# SUBPART B — PISTON ENGINES: DESIGN AND CONSTRUCTION

Engines (CS-E) · CS-E

1. ## [CS-E 210 Failure Analysis](https://avioverse.aero/regulations/easa/cs-e/subpart-b/cs-e-210-failure-analysis)

   (See AMC E 210) (a) A Failure analysis of the Engine, including the control system for a typical installation must be made to establish that no single…

2. ## [AMC E 210 Failure Analysis](https://avioverse.aero/regulations/easa/cs-e/subpart-b/amc-e-210-failure-analysis)

   The Failure analysis would normally include investigation of those Engine components that could affect the functioning and integrity of the major…

3. ## [CS-E 230 De-Icing and Anti-Icing Precautions](https://avioverse.aero/regulations/easa/cs-e/subpart-b/cs-e-230-de-icing-and-anti-icing-precautions)

   The design of the Engine induction system must be such as to minimise the risk of ice formation adversely affecting the functioning of the Engine and, if…

4. ## [CS-E 240 Ignition](https://avioverse.aero/regulations/easa/cs-e/subpart-b/cs-e-240-ignition)

   All spark-ignition Engines shall comply with the following: The Engine shall be equipped either with:

   [AMC E 240 Ignition](https://avioverse.aero/regulations/easa/cs-e/subpart-b/cs-e-240-ignition#amc-e-240)

5. ## [CS-E 250 Fuel System](https://avioverse.aero/regulations/easa/cs-e/subpart-b/cs-e-250-fuel-system)

   Each fuel specification to be approved, including any additive, and the associated limitations in flow, temperature and pressure that ensure proper…

6. ## [CS-E 260 Engine Cooling System](https://avioverse.aero/regulations/easa/cs-e/subpart-b/cs-e-260-engine-cooling-system)

   The design and construction of the Engine cooling system must ensure adequate cooling in all normal operating conditions within the flight envelope.

7. ## [CS-E 270 Lubrication System](https://avioverse.aero/regulations/easa/cs-e/subpart-b/cs-e-270-lubrication-system)

   It shall not be possible for oil to drain into the Engine when it is not running, in such quantities as to introduce a risk of ‘hydraulicing’ or in any…

8. ## [CS-E 290 Hand Turning](https://avioverse.aero/regulations/easa/cs-e/subpart-b/cs-e-290-hand-turning)

   It must be possible to rotate the crankshaft in controlled slow motion.

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.

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