AD 2021-24-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
ignition sources inside the fuel tanks and the increased flammability exposure of the center fuel tank caused by latent failures, alterations, repairs, or maintenance actions, which could result in a fuel tank explosion and consequent loss of an airplane; and to address potential loss of engine fuel suction feed capability, which could result in dual engine flameouts, inability to restart engines, and consequent forced landing of the airplane.
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Required Actions
revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations, and accomplishing the airworthiness limitation instructions (ALI) tasks at the applicable initial compliance times after the airplane is returned to service.
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Compliance Time
Within 50 flight hours
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Affected Aircraft
The Boeing Company Model 777 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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