AD 80-15-51
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney Division | JT8D-209 | PRATT & WHITNEY AIRCRAFT Models JT8D-1, -1A, -1B, -5, -7, -7A, -7B, -9, -9A, -11, -15, -17, -17R, -209, and -209A Engines |
| engine | Pratt & Whitney Division | JT8D-1 | PRATT & WHITNEY AIRCRAFT Models JT8D-1, -1A, -1B, -5, -7, -7A, -7B, -9, -9A, -11, -15, -17, -17R, -209, and -209A Engines |
| engine | Pratt & Whitney Division | JT8D-11 | PRATT & WHITNEY AIRCRAFT Models JT8D-1, -1A, -1B, -5, -7, -7A, -7B, -9, -9A, -11, -15, -17, -17R, -209, and -209A Engines |
| engine | Pratt & Whitney Division | JT8D-15 | PRATT & WHITNEY AIRCRAFT Models JT8D-1, -1A, -1B, -5, -7, -7A, -7B, -9, -9A, -11, -15, -17, -17R, -209, and -209A Engines |
| engine | Pratt & Whitney Division | JT8D-17 | PRATT & WHITNEY AIRCRAFT Models JT8D-1, -1A, -1B, -5, -7, -7A, -7B, -9, -9A, -11, -15, -17, -17R, -209, and -209A Engines |
| engine | Pratt & Whitney Division | JT8D-17R | PRATT & WHITNEY AIRCRAFT Models JT8D-1, -1A, -1B, -5, -7, -7A, -7B, -9, -9A, -11, -15, -17, -17R, -209, and -209A Engines |
| engine | Pratt & Whitney Division | JT8D-1A | PRATT & WHITNEY AIRCRAFT Models JT8D-1, -1A, -1B, -5, -7, -7A, -7B, -9, -9A, -11, -15, -17, -17R, -209, and -209A Engines |
| engine | Pratt & Whitney Division | JT8D-1B | PRATT & WHITNEY AIRCRAFT Models JT8D-1, -1A, -1B, -5, -7, -7A, -7B, -9, -9A, -11, -15, -17, -17R, -209, and -209A Engines |
| engine | Pratt & Whitney Division | JT8D-5 | PRATT & WHITNEY AIRCRAFT Models JT8D-1, -1A, -1B, -5, -7, -7A, -7B, -9, -9A, -11, -15, -17, -17R, -209, and -209A Engines |
| engine | Pratt & Whitney Division | JT8D-7 | PRATT & WHITNEY AIRCRAFT Models JT8D-1, -1A, -1B, -5, -7, -7A, -7B, -9, -9A, -11, -15, -17, -17R, -209, and -209A Engines |
Unsafe Condition
Uncontained failure of engine rear compressor front hubs due to cracks in hubs with balance cuts.
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Required Actions
Inspect all eighth stage rear compressor front hubs with part numbers 690908, 701308, 717608, 717708, and 738308 for cracks using ultrasonic or fluorescent magnetic particle procedures per Pratt & Whitney Aircraft Alert Service Bulletin ASB 5154, Revision No. 1, or later approved revision. Compliance schedules vary by engine model and hub total cycles as of July 21, 1980. Inspections must be done before specified cycle thresholds or within specified intervals. Thereafter, inspect at intervals not exceeding 6,000 cycles. Remove hubs with cracks before further flight. Report defects within 5 days.
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Compliance Time
Compliance is required as indicated in the inspection schedules based on hub total cycles as of July 21, 1980. For example, for JT8D-1 series engines with less than 13,000 cycles, inspect before 15,000 cycles. For JT8D-17R with 16,000+ cycles, inspect within next 200 cycles. All must comply per their specific model's cycle ranges.
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Affected Aircraft
Pratt & Whitney Aircraft JT8D-1, -1A, -1B, -5, -7, -7A, -7B, -9, -9A, -11, -15, -17, -17R, -209, and -209A engines with rear compressor front hubs part numbers 690908, 701308, 717608, 717708, or 738308 containing balance cuts.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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