AD 2016-21-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Locations where the control components and wiring of the left and right engine fuel spar valves do not have adequate physical separation to meet the redundant system separation requirements.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify the wiring and install a new relay bracket and new location for the relay on the left and right engine fuel spar valves. Inspect to identify the part number of the MOV actuators for the left and right engine fuel spar valves; replace specified MOV actuators with new MOV actuators. Perform certain bonding resistance measurements and applicable corrective actions.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 60 months after the effective date of the AD.
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Affected Aircraft
The Boeing Company Model 777-200, -200LR, -300, and -300ER series airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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