Airworthiness Directives; Boeing Model 747-400 Series Airplanes Powered by General Electric CF6-80C2 or Pratt & Whitney PW4000 Series Engines
airworthiness · Rule · Final rule. · Published 1996-04-23 · Effective 1996-05-23 · 61 FR 17824
Document
Document number
96-9338
Federal Register citation
61 FR 17824
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Boeing Model 747-400 Series
Publication date
1996-04-23
Effective date
1996-05-23
FAA docket
Docket No. 95-NM-98-AD
Abstract
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 747-400 series airplanes, that requires modification of the engine fuel feed system. This amendment is prompted by reports indicating that the coupling nut on the fuel tube on the outboard strut (engine position 1) fractured. The actions specified by this AD are intended to prevent such fracturing of the coupling nut, which could result in release of fuel onto the engine cowling and a subsequent fire.