AD 2016-11-16
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
| engine | Rolls-Royce | RB211-Trent 800 | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Thermal damage of the thrust reverser (T/R) inner wall could lead to failure of the T/R and adjacent components, resulting in their separation from the airplane. This could cause a rejected takeoff (RTO) and asymmetric thrust, leading to loss of control during reverse thrust operation. Overheating of the T/R inner wall could also cause structural damage to the airplane, damage to other airplanes, or injury to people on the ground.
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Required Actions
Conduct a records review and applicable repetitive inspections, replacements, and installations of the T/R inner wall. Investigate and correct issues if necessary. Install serviceable T/R halves to terminate repetitive actions. Revise the inspection or maintenance program by incorporating new airworthiness limitations.
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Compliance Time
Within 1,125 days or 6,000 flight cycles, whichever occurs first, after the last inspection for AWL 78-AWL-01, Thrust Reverser Thermal Protection System, for T/Rs that have already incorporated 78-AWL-01.
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Affected Aircraft
The Boeing Company Model 777-200 and -300 series airplanes equipped with Rolls-Royce Model RB211-Trent 800 engines.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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