AD 2019-15-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Engine Alliance | Turbofan | Airworthiness Directives; Engine Alliance Turbofan Engines |
Unsafe Condition
The HPC interstage 5-6 seal teeth may fail due to an incorrectly installed stage 6 seal ring, leading to uncontained release of the HPC stages 2-5 spool.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform an initial inspection of the HPC stage 6 seal ring for correct installation and inspection of the HPC stages 2-5 spool for cracks or missing coating. Perform repetitive on-wing inspections for a sub-population of HPT stages 2-5 spools. Remove and replace the HPC stages 2-5 spool if, as the result of any inspection required by this AD, the stage 6 seal ring is found installed incorrectly or the HPC interstage 5-6 seal teeth are found cracked or are missing coating.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Engine Alliance GP7270, GP7272, and GP7277 model turbofan engines.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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