Superseded by FAA AD 2019-15-06
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Engine Alliance GP7270, GP7272, and GP7277 engines must perform borescope inspections of the stage 6 seal ring and HPC stages 2-5 spool within the specified compliance times. If the stage 6 seal ring is found incorrectly installed or cracks are detected, the HPC spool must be removed and replaced within 50 cycles. Compliance with these actions is required by January 11, 2019.
Summary
FAA Airworthiness Directive 2018-22-07 is a final rule applicable to all Engine Alliance GP7270, GP7272, and GP7277 model turbofan engines. It mandates inspections of the stage 6 seal ring installation and the high-pressure compressor (HPC) stages 2-5 spool for cracks to address an unsafe condition caused by axial cracks in the HPC spool spacer arm. The directive aims to prevent uncontained failures that could damage the engine and aircraft.
What changed
This new airworthiness directive introduces mandatory borescope and visual inspections of the stage 6 seal ring and HPC stages 2-5 spool for cracks. It requires removal and replacement of the HPC spool if the stage 6 seal ring is incorrectly installed or if cracks are found. The AD also incorporates Engine Alliance Alert Service Bulletin EAGP7-A72-395, Revision No. 2, as the service information for compliance.
Why it matters
This AD is critical for aviation professionals because it addresses a potential failure that could lead to uncontained engine damage and jeopardize flight safety. Operators and maintenance organizations must ensure compliance to prevent costly engine damage and maintain airworthiness. Timely inspections and corrective actions reduce the risk of in-flight engine failures and associated hazards.
More for Engine Alliance GP7200
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- EASA AD US-2023-11-06Engine - High-Pressure Turbine Interstage Seals - ReplacementJun 12, 2023
- EASA AD US-2022-10-04Engine - Stages 7-9 Compressor Rotor Spool - ReplacementMay 9, 2022
- EASA AD US-2021-26-04Engine - Fan Hub Assembly - Inspection / ReplacementJan 3, 2022
- EASA AD US-2021-12-01Engine - Low-Pressure Compressor Stage 1 Fan Blades - Inspection / Replacement
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New ADs and bulletins for Engine Alliance GP7200, summarized like this page, every Monday.