AD 92-19-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 757-200 Series | Airworthiness Directives; BOEING Model 757 Airplanes |
| aircraft | The Boeing Company | 757-200CB Series | Airworthiness Directives; BOEING Model 757 Airplanes |
| aircraft | The Boeing Company | 757-200PF Series | Airworthiness Directives; BOEING Model 757 Airplanes |
| aircraft | The Boeing Company | 757-300 Series | Airworthiness Directives; BOEING Model 757 Airplanes |
Unsafe Condition
In-flight deployment of one thrust reverser sleeve on one engine could result in reduced controllability of the airplane.
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Required Actions
Rework the flow control tee assembly in the deploy lines on both engine struts by removing the poppet valves; install a restrictor check valve in the stow and deploy lines on each thrust reverser sleeve; and perform a functional test of the thrust reverser system in accordance with Boeing Alert Service Bulletin 757-78A0029 dated February 28, 1992.
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Compliance Time
Within 180 days after the effective date of this AD
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Affected Aircraft
Model 757 airplanes equipped with Pratt and Whitney PW2000 series engines, as listed in Boeing Alert Service Bulletin 757-78A0029 dated February 28, 1992.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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