AD 2023-11-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Engine | Alliance | Airworthiness Directives; Engine Alliance Engines |
Unsafe Condition
certain HPT interstage seals were manufactured from material suspected to contain iron inclusion, which may cause premature fracture and subsequent uncontained failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the affected HPT interstage seals with a part eligible for installation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
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Affected Aircraft
Engine Alliance Model GP7270, GP7272, and GP7277 engines with an installed high-pressure turbine (HPT) interstage seal having part number (P/N) 2047M99P02 and serial number (S/N) BTB71863 or BTB86871.
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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