---
title: "MODULE 16. PISTON ENGINE — Part-66 · Avioverse"
description: "MODULE 16. PISTON ENGINE LEVEL A2 A4 B1.2 B1.4 B3 16.1 Fundamentals 1 2 16.2 Engine performance 1 2 16.3 Engine construction 1 2 16.4 Engine fuel systems…"
url: "https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/appendices-to-annex-iii-part-66/module-16-piston-engine"
---

# MODULE 16. PISTON ENGINE

Annex III (Part-66) · Regulation (EU) No 1321/2014 · EAR revision 2 Sep 2025

Official sources: [EASA Easy Access Rules (opens in a new tab)](https://www.easa.europa.eu/en/document-library/easy-access-rules/easy-access-rules-continuing-airworthiness) · [EUR-Lex 2014/1321 (opens in a new tab)](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32014R1321)

IR Implementing rule

## MODULE 16. PISTON ENGINE

| MODULE 16. PISTON ENGINE                      | LEVEL |              |
| --------------------------------------------- | ----- | ------------ |
|                                               | A2 A4 | B1.2 B1.4 B3 |
| 16.1 Fundamentals                             | 1     | 2            |
| 16.2 Engine performance                       | 1     | 2            |
| 16.3 Engine construction                      | 1     | 2            |
| 16.4 Engine fuel systems                      |       |              |
| 16.4.1 Carburettors                           | 1     | 2            |
| 16.4.2 Fuel injection systems                 | 1     | 2            |
| 16.4.3 Electronic engine control              | 1     | 2            |
| 16.5 Starting and ignition systems            | 1     | 2            |
| 16.6 Induction, exhaust and cooling systems   | 1     | 2            |
| 16.7 Supercharging/turbocharging              | 1     | 2            |
| 16.8 Lubricants and fuels                     | 1     | 2            |
| 16.9 Lubrication systems                      | 1     | 2            |
| 16.10 Engine indication systems               | 1     | 2            |
| 16.11 Power plant installation                | 1     | 2            |
| 16.12 Engine monitoring and ground operation  | 1     | 3            |
| 16.13 Engine storage and preservation         | —     | 2            |
| 16.14 Alternative piston engine constructions | 1     | 1            |

IR — Regulation (EU) No 1321/2014 · Regulation (EU) 2023/989 · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

[All rules in APPENDICES TO ANNEX III (Part-66)](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/appendices-to-annex-iii-part-66)

Consolidated from the EASA Easy Access Rules (revision 2 Sep 2025, extracted 2 Nov 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.