AD 2000-22-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | JT8D Series | Airworthiness Directives; Pratt & Whitney JT8D Series Turbofan Engines |
Unsafe Condition
Failed main fuel pump control shafts caused by excessive spline wear, which could lead to loss of engine throttle control, uncommanded acceleration, uncommanded deceleration, or inflight shutdown.
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Required Actions
Inspect main fuel pump control shafts for excessive spline wear. Replace the main fuel pump control shaft with parts of improved design. Rework the main fuel pump impeller, impeller gear train plate assembly, and impeller cover assembly.
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Compliance Time
Before further flight for engines with main fuel pumps that have not incorporated the reworked components. For engines with reworked components, inspections are due at 6,000 hours time in service (TIS).
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Affected Aircraft
Pratt & Whitney JT8D series turbofan engines, including models JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, -11, -15, -15A.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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