Airworthiness Directives; The Boeing Company Airplanes
airworthiness · Rule · Final rule. · Published 2020-02-12 · Effective 2020-03-18 · 85 FR 7868
Document
Document number
2020-02667
Federal Register citation
85 FR 7868
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
The Boeing Company
Publication date
2020-02-12
Effective date
2020-03-18
FAA docket
Docket No. FAA-2016-9073
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 707 airplanes and Model 720 and 720B series airplanes. This AD was prompted by the FAA's analysis of the Model 707 and 720 fuel system reviews conducted by the manufacturer. This AD requires modifying the fuel quantity indicating system (FQIS) to prevent development of an ignition source inside the center fuel tank due to electrical fault conditions. The FAA is issuing this AD to address the unsafe condition on these products.