Airworthiness Directives; McDonnell Douglas Corporation Model DC-9-30, DC-9-40, and DC-9-50 Series Airplanes, Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Airplanes, and Model MD-88 and MD-90-30 Airplanes
airworthiness · Rule · Final rule. · Published 2010-12-07 · Effective 2011-01-11 · 75 FR 75872
Document
Document number
2010-30518
Federal Register citation
75 FR 75872
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2010-12-07
Effective date
2011-01-11
FAA docket
Docket No. FAA-2008-0934
Abstract
We are adopting a new airworthiness directive (AD) for the McDonnell Douglas Corporation airplanes listed above. This AD requires modifying the fuel boost pumps for the center wing, and forward or aft auxiliary fuel tanks. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent possible sources of ignition in a fuel tank caused by an electrical fault in the fuel boost pumps. An ignition source in the fuel tank could result in a fire or an explosion and consequent loss of the airplane.