AD 71-25-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney Division | JT8D-1 | PRATT & WHITNEY AIRCRAFT Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 Engines |
| engine | Pratt & Whitney Division | JT8D-11 | PRATT & WHITNEY AIRCRAFT Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 Engines |
| engine | Pratt & Whitney Division | JT8D-1A | PRATT & WHITNEY AIRCRAFT Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 Engines |
| engine | Pratt & Whitney Division | JT8D-7 | PRATT & WHITNEY AIRCRAFT Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 Engines |
| engine | Pratt & Whitney Division | JT8D-7A | PRATT & WHITNEY AIRCRAFT Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 Engines |
| engine | Pratt & Whitney Division | JT8D-9 | PRATT & WHITNEY AIRCRAFT Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 Engines |
Unsafe Condition
Failure of the fuel nozzle support assemblies from fatigue cracking in the base fillet.
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Required Actions
Alter all fuel nozzle support assembly part numbers 480735, 493332, 501725, or 523476 in accordance with P&WA Service Bulletin No. 3536 or equivalent method approved by the Chief, Engineering & Manufacturing Branch, FAA, Eastern Region, or replace with superseding part number fuel nozzle support assembly.
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Compliance Time
Within the next 6000 hours' time in service after the effective date of this AD unless already accomplished
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Affected Aircraft
Pratt & Whitney Aircraft Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 engines incorporating fuel nozzle support assemblies with part numbers 480735, 493332, 501725, or 523476.
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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