AD 98-21-22 R1
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney Division | JT9D-59A | Airworthiness Directives; Pratt & Whitney JT9D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT9D-70A | Airworthiness Directives; Pratt & Whitney JT9D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT9D-7Q | Airworthiness Directives; Pratt & Whitney JT9D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT9D-7Q3 | Airworthiness Directives; Pratt & Whitney JT9D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT9D-7R4D | Airworthiness Directives; Pratt & Whitney JT9D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT9D-7R4D1 | Airworthiness Directives; Pratt & Whitney JT9D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT9D-7R4E | Airworthiness Directives; Pratt & Whitney JT9D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT9D-7R4E1 | Airworthiness Directives; Pratt & Whitney JT9D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT9D-7R4E4 | Airworthiness Directives; Pratt & Whitney JT9D Series Turbofan Engines |
| engine | Pratt & Whitney Division | JT9D-7R4G2 | Airworthiness Directives; Pratt & Whitney JT9D Series Turbofan Engines |
Unsafe Condition
High Pressure Compressor Disks
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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