Airworthiness Directives; The Boeing Company Model 777-200, -200LR, -300, and -300ER Series Airplanes
airworthiness · Rule · Final rule; request for comments. · Published 2011-12-16 · Effective 2012-01-03 · 76 FR 78138
Document
Document number
2011-31893
Federal Register citation
76 FR 78138
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Publication date
2011-12-16
Effective date
2012-01-03
FAA docket
Docket No. FAA-2011-1317
Abstract
We are superseding an existing airworthiness directive (AD) for certain Model 777-200, -300, and -300ER series airplanes. That AD currently requires installing Teflon sleeving under the clamps of certain wire bundles routed along the fuel tank boundary structure, and cap sealing certain penetrating fasteners of the main and center fuel tanks. This AD expands the applicability in the existing AD. This AD was prompted by fuel system reviews conducted by the manufacturer, which determined that electrical arcing on the fuel tank boundary structure or inside the fuel tanks could result in a fire or explosion. We are issuing this AD to correct the unsafe condition on these products.