AD 99-01-08
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney Division | JT3D-1 | Airworthiness Directives; Pratt & Whitney JT8D and JT3D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT3D-1-MC6 | Airworthiness Directives; Pratt & Whitney JT8D and JT3D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT3D-1-MC7 | Airworthiness Directives; Pratt & Whitney JT8D and JT3D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT3D-1A | Airworthiness Directives; Pratt & Whitney JT8D and JT3D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT3D-1A-MC6 | Airworthiness Directives; Pratt & Whitney JT8D and JT3D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT3D-1A-MC7 | Airworthiness Directives; Pratt & Whitney JT8D and JT3D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT3D-3 | Airworthiness Directives; Pratt & Whitney JT8D and JT3D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT3D-3B | Airworthiness Directives; Pratt & Whitney JT8D and JT3D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT3D-3C | Airworthiness Directives; Pratt & Whitney JT8D and JT3D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT3D-5A | Airworthiness Directives; Pratt & Whitney JT8D and JT3D Series Turbofan Engines |
Unsafe Condition
Stage 7 through Stage 15 High-Pressure Compressor (HPC) Disks
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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