AD Amdt-39-10975
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | JT8D and JT3D Series | Airworthiness Directives; Pratt & Whitney JT8D and JT3D Series Turbofan Engines |
Unsafe Condition
Failure of a high-pressure compressor (HPC) disk due to Cadmium embrittlement, resulting in uncontained engine failure and damage to the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove and replace with serviceable parts, certain stage 7 through stage 15 HPC disks identified by part number and serial number.
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Compliance Time
Before further flight
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Affected Aircraft
Pratt & Whitney JT8D and JT3D series turbofan engines with stage 7 through stage 15 HPC disks installed, identified by specific part numbers and serial numbers listed in Appendix 1. These engines are installed on but not limited to Boeing 707, 727, and 737 series airplanes and McDonnell Douglas DC-8, DC-9, and MD-80 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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