AD 89-25-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney Division | JT8D-11 | PRATT & WHITNEY Models JT8D-9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
| engine | Pratt & Whitney Division | JT8D-15 | PRATT & WHITNEY Models JT8D-9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
| engine | Pratt & Whitney Division | JT8D-15A | PRATT & WHITNEY Models JT8D-9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
| engine | Pratt & Whitney Division | JT8D-17 | PRATT & WHITNEY Models JT8D-9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
| engine | Pratt & Whitney Division | JT8D-17A | PRATT & WHITNEY Models JT8D-9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
| engine | Pratt & Whitney Division | JT8D-17AR | PRATT & WHITNEY Models JT8D-9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
| engine | Pratt & Whitney Division | JT8D-17R | PRATT & WHITNEY Models JT8D-9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
| engine | Pratt & Whitney Division | JT8D-9 | PRATT & WHITNEY Models JT8D-9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
| engine | Pratt & Whitney Division | JT8D-9A | PRATT & WHITNEY Models JT8D-9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
Unsafe Condition
Fire, inflight shutdown, engine cowl release, or airframe damage associated with a first stage fan blade liberation due to certain first stage fan blade retaining plates (Part Numbers 520451, 616645, 639616, 760297, 793935, or 802710).
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Required Actions
Replace specified first stage fan blade retaining plates with improved design retaining plate Part Number 803996, following Pratt & Whitney Alert Service Bulletin 5841. Compliance must be at the next shop visit but no later than specified deadlines based on engine mounting type and service hours.
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Compliance Time
Two years or 4,000 hours in service after January 15, 1990, whichever occurs later for wing-mounted engines; four years or 8,000 hours in service after January 15, 1990, whichever occurs later for fuselage-mounted engines; five years or 10,000 hours in service after January 15, 1990, whichever occurs later for retaining plates with P/N 760297, 793935, or 802710.
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Affected Aircraft
Pratt & Whitney JT8D-9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR engines.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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