AD 2021-18-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
damaged or missing solid rivet heads on the sloping pressure deck web, which could result in loss of sloping pressure deck panels, causing decompression and pressure loss, and loss of the hydraulic systems in the area for wheel brakes (both normal and alternate) and steering, and potentially leading to runway departure and adversely affecting the structural integrity of the airplane.
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Required Actions
doing a detailed inspection of the left- and right-side sloping pressure deck at certain stations for any damaged solid rivets, and applicable on-condition actions, including replacing damaged rivets, installing blind fasteners, and revising the Airplane Flight Manual (AFM).
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Compliance Time
Within 16 months after the effective date of this AD.
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Affected Aircraft
all The Boeing Company Model 777 airplanes, including Model 777-200, -200LR, -300, -300ER, and 777F airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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