LPT Disk 1 failure on CFM56-5-A1 engine
- Published
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected stakeholders should monitor communications from EASA and the engine manufacturer for updates and potential mandatory actions. Operators should conduct thorough inspections if any symptoms similar to those described occur and maintain close coordination with maintenance and certification authorities. No immediate compliance deadlines are specified in this bulletin.
Summary
EASA Safety Information Bulletin SIB No. 2009-23 addresses a Low Pressure Turbine (LPT) Disk 1 failure on the CFM56-5-A1 engine. The bulletin reports an incident on 30 June 2009 involving a CFM56-5A engine that experienced a stall during take-off, leading to LPT damage and disk fracture. The document is relevant to operators and maintenance organizations using CFM56-5-A1 engines.
What changed
This bulletin introduces information about the LPT Disk 1 failure event and preliminary findings from the investigation, including evidence of overheating and cooling deficiencies in the turbine rotor air cooling system. It does not mandate any immediate regulatory changes but informs stakeholders of ongoing investigations by EASA and FAA.
Why it matters
This information is critical for aviation professionals because it highlights a potential safety issue with the CFM56-5-A1 engine that could affect engine reliability and safety during flight. Operators and maintenance teams need to be aware of the signs of LPT damage and the importance of inspections to prevent in-flight shutdowns and ensure continued airworthiness.
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