AD 2000-10-17
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 | Airworthiness Directives; Boeing Model 747 Series Airplanes Equipped With Pratt & Whitney JT9D-70 Series Engines |
| engine | Pratt & Whitney | JT9D-70 Series | Airworthiness Directives; Boeing Model 747 Series Airplanes Equipped With Pratt & Whitney JT9D-70 Series Engines |
Unsafe Condition
In-flight deployment of a thrust reverser could result in significant reduction in airplane controllability.
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Required Actions
Inspect the thrust reverser wiring on each engine within 200 flight hours or 50 flight cycles after the effective date, repair any discrepancies, and perform a thrust reverser wiring modification within 5,000 flight hours or 500 flight cycles. Conduct repetitive inspections and tests of the thrust reverser control and indication system at specified intervals.
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Compliance Time
Within 200 flight hours or 50 flight cycles for initial inspection, and within 5,000 flight hours or 500 flight cycles for wiring modification.
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Affected Aircraft
Boeing Model 747 series airplanes equipped with Pratt & Whitney JT9D-70 series engines, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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