Airworthiness Directives; McDonnell Douglas Model MD-11F Airplanes
airworthiness · Rule · Final rule; request for comments. · Published 2006-12-12 · Effective 2006-12-27 · 71 FR 74459
Document
Document number
E6-20951
Federal Register citation
71 FR 74459
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
McDonnell Douglas Model MD-11F
Publication date
2006-12-12
Effective date
2006-12-27
FAA docket
Docket No. FAA-2006-26527
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain McDonnell Douglas Model MD-11F airplanes. This AD requires a general visual inspection for installation of conduit and chafing damage on the auxiliary power unit (APU) power feeder wires and the upper surface of the auxiliary fuel tank and repair if necessary. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to detect and correct unprotected APU power feeder wires that come into close proximity to the upper surface of the auxiliary "piggy back" fuel tank, which could result in a potential ignition source, and in combination with flammable fuel vapors, could cause a fuel tank explosion and consequent loss of the airplane.