Engine — Propeller Gearbox / Magnetic Plug — Inspection / Propeller Shaft — Replacement
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must inspect the magnetic plug on affected engines before the next flight after 4 August 2023 and repeat inspections every 10 flight hours if no discrepancies are found. Any detected discrepancies require immediate replacement of the affected propeller shaft with a serviceable part before further flight. All affected parts must be replaced within 50 flight hours or 10 days after the effective date, whichever is later, and installation of affected parts is prohibited from the effective date onward.
Summary
EASA Airworthiness Directive 2023-0156-E is an emergency directive addressing certain BRP-Rotax 912 and 914 series engines installed on various general aviation aircraft and powered sailplanes. It mandates inspection of the propeller gearbox magnetic plug and replacement of affected propeller shafts with part number 937047 due to machining deviations causing surface abnormalities. The directive applies to specific engine serial numbers and spare parts identified by BRP-Rotax.
What changed
This new emergency airworthiness directive introduces mandatory inspections of the magnetic plug for affected engines and requires replacement of non-conforming propeller shafts before further flight or within specified flight hours. It prohibits installation or reinstallation of affected parts and establishes repetitive inspection intervals until replacement is completed. The directive is based on findings of increased wear risk due to a production batch deviation.
Why it matters
This directive is critical for aviation operators and maintenance organizations to prevent potential engine in-flight shutdowns caused by propeller shaft bearing wear. Compliance ensures continued airworthiness and safety of aircraft equipped with affected Rotax engines. Failure to comply could lead to emergency landings, aircraft damage, and occupant injury, impacting operational reliability and regulatory adherence.
More for Brp-Rotax Gmbh & Co Kg 912 A
All 5- EASA AD 2026-0121-EEngine – Propeller Gearbox – InspectionJun 24, 2026
- EASA AD 2017-0208[Correction] Reciprocating Engine — Valve Push Rod Assembly — Inspection / ReplacementDec 22, 2017
- EASA SIB 2014-34Possible Exceedance of Engine Temperature Limits of BRP-Powertrain Rotax 912 and 914 EnginesDec 23, 2014
- EASA SIB 2014-31BRP-Powertrain Rotax 912 and 914 Engines Carburettor Float Non-ConformityNov 7, 2014
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