AD Amdt-39-11219
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | JT9D Series | Airworthiness Directives; Pratt & Whitney JT9D Series Turbofan Engines |
Unsafe Condition
Cracks in the sixth stage low pressure turbine (LPT) inner airseal, less than one inch in length, could lead to an uncontained failure of the airseal, resulting in damage to the aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct additional repetitive borescope inspections for sixth stage LPT inner airseals found with cracks less than one inch in length. Modify the sixth stage LPT inner airseal as previously required by the superseded AD to reduce the potential for failure modes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the compliance times specified in the superseded AD, with additional inspections conducted as required by this amendment.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pratt & Whitney JT9D series turbofan engines, as specified in the superseded AD, with the sixth stage LPT inner airseal subject to the inspections and modifications.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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