AD 2000-09-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-400 | Airworthiness Directives; Boeing Model 747-400 Series Airplanes Equipped With General Electric CF6-80C2 Series Engines |
| engine | General Electric | CF6-80C2 Series | Airworthiness Directives; Boeing Model 747-400 Series Airplanes Equipped With General Electric CF6-80C2 Series Engines |
Unsafe Condition
Possible failure modes in the thrust reverser control system that can result in inadvertent deployment of a thrust reverser during flight.
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Required Actions
Inspect and functionally test the thrust reverser control and indication system, including the cone brake of the center drive unit, and correct any discrepancies found. For airplanes with a third locking system installed, follow the additional steps in Appendix 1 to unlock the electro-mechanical brake before testing the cone brake.
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Compliance Time
Within 650 flight hours after the effective date of this AD.
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Affected Aircraft
Boeing Model 747-400 series airplanes equipped with General Electric CF6-80C2 series engines.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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