Engine - Stages 7-9 Compressor Rotor Spool - Replacement
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of aircraft equipped with Engine Alliance GP7270, GP7272, or GP7277 engines must remove and replace the affected stages 7-9 compressor rotor spools identified by specific part and serial numbers within 500 flight cycles from May 23, 2022. They should use only parts eligible for installation, meaning those not listed as affected. Comments on the AD can be submitted to the FAA by June 21, 2022.
Summary
The document titled "Engine - Stages 7-9 Compressor Rotor Spool - Replacement" is a Federal Aviation Administration (FAA) Airworthiness Directive (AD 2022-10-04) addressing certain Engine Alliance GP7270, GP7272, and GP7277 turbofan engines. It mandates the replacement of specific stages 7-9 compressor rotor spools suspected of containing foreign material embedded in the billet used for manufacturing. This directive aims to prevent potential failure of the high-pressure compressor stage 8 rotor disk and associated engine and aircraft damage.
What changed
This new AD introduces a mandatory replacement requirement for affected stages 7-9 compressor rotor spools with specified part and serial numbers. It is an interim action prompted by a manufacturer investigation revealing material contamination risks. The AD requires removal and replacement within 500 flight cycles after the effective date.
Why it matters
This AD is critical for aviation professionals because it addresses a safety risk that could lead to uncontained engine failures, posing hazards to aircraft and passengers. Operators and maintenance organizations must ensure compliance to avoid potential engine damage and maintain airworthiness. The directive also highlights the importance of monitoring manufacturer investigations and acting promptly on identified unsafe conditions.
More for Engine Alliance GP7200
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- 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 / ReplacementJun 14, 2021
- EASA AD US-2019-25-13SUPERSEDED BY FAA AD 2021-12-01Jan 6, 2020
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New ADs and bulletins for Engine Alliance GP7200, summarized like this page, every Monday.