AD Amdt-39-9815
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | JT3D Series | Airworthiness Directives; Pratt & Whitney JT3D Series Turbofan Engines |
Unsafe Condition
Failure of steel high pressure compressor (HPC) disks due to corrosion, which could result in an uncontained engine failure and damage to the aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect steel HPC disks stages 10-15 for corrosion, recoat or replate disks, or replace as necessary in accordance with Pratt & Whitney Alert Service Bulletin A6208, Revision 3.
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Compliance Time
Extended compliance time based on Pratt & Whitney's risk analysis as per ASB A6208 Rev 3.
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Affected Aircraft
Pratt & Whitney JT3D series turbofan engines worldwide, approximately 2,000 engines with 1,000 in U.S. registry.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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