AD 2011-05-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company Model 757 | Airworthiness Directives; The Boeing Company Model 757 Airplanes |
Unsafe Condition
Improper wire bundle support installation and sleeving, along with improperly sealed fasteners in the main and center fuel tanks, could become an ignition source in the event of a fault current or lightning strike, potentially leading to a fuel tank explosion and loss of the airplane.
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Required Actions
Seal the fasteners on the front and rear spars inside the left and right main fuel tanks and on the rear spar and lower panel of the center fuel tank. Inspect wire bundle support installations to verify the presence of certain clamps and Teflon sleeving. Seal additional fasteners on the rear spar inside the left and right main fuel tanks. Revise the Instructions for Continued Airworthiness (ICAs) as necessary.
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Compliance Time
Within 60 months after the effective date of this AD.
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Affected Aircraft
The Boeing Company Model 757 airplanes, as specified in the AD, with certain configurations or modifications as detailed in the referenced service bulletins.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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