AD 80-19-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney Division | JT3D-1-MC7 | PRATT & WHITNEY AIRCRAFT Model JT3D-1-MC7 Engines |
Unsafe Condition
High cycle fatigue cracking of fifth stage compressor disks (P/N 426505) which could result in disk fracture.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Retire from service all fifth stage compressor disks P/N 426505 and replace with either disk P/N 697105 or P/N 749605.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
not later than December 31, 1980
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Affected Aircraft
Pratt & Whitney Aircraft JT3D-1-MC7 turbofan engine models
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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