AD 2000-17-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 and 767 | Airworthiness Directives; Boeing Model 747 and 767 Series Airplanes Equipped With General Electric CF6-80C2 Series Engines |
| engine | General Electric | CF6-80C2 Series | Airworthiness Directives; Boeing Model 747 and 767 Series Airplanes Equipped With General Electric CF6-80C2 Series Engines |
Unsafe Condition
Latent failure mode of the fail-safe features of the thrust reverser system, identified as possible leakage of the directional pilot valve (DPV) due to a poppet being jammed slightly open or a leaking o-ring.
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Required Actions
Conduct repetitive functional tests of the DPV of the thrust reversers to detect pneumatic leakage, and take corrective action if necessary. The tests must be performed at intervals not to exceed 6,000 flight hours.
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Compliance Time
Within 6,000 flight hours
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Affected Aircraft
Boeing Model 747 and 767 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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