Airworthiness Directives; Boeing Model 747-400 and -400D Series Airplanes
airworthiness · Rule · Final rule; request for comments. · Published 2004-04-06 · Effective 2004-04-21 · 69 FR 17919
Document
Document number
04-7298
Federal Register citation
69 FR 17919
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Boeing Model 747-400 and -400D Series
Publication date
2004-04-06
Effective date
2004-04-21
FAA docket
Docket No. 2004-NM-01-AD
Abstract
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 747-400 and -400D series airplanes. This action requires an inspection to determine the routing configuration of wire bundle W4489 and related investigative/corrective actions. This action is necessary to prevent possible interference between wire bundle W4489 and the receptacle housing of the chiller boost fan, drain tubes, and adjacent structure, which could result in damage to the wire bundle and consequent arcing and fire. This action is intended to address the identified unsafe condition.