Airworthiness Directives; Boeing Model 747-400, 747-400D, and 747-400F Series Airplanes
airworthiness · Rule · Final rule. · Published 2008-10-16 · Effective 2008-11-20 · 73 FR 61342
Document
Document number
E8-24130
Federal Register citation
73 FR 61342
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2008-10-16
Effective date
2008-11-20
FAA docket
Docket No. FAA-2008-0640
Abstract
We are adopting a new airworthiness directive (AD) for certain Boeing Model 747-400, 747-400D, and 747-400F series airplanes. This AD requires installing an extension tube to the existing pump discharge port of the scavenge pump on the outboard side of the center fuel tank in the main fuel tank <greek-i>2. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent a fire or explosion in the fuel tank and consequent loss of the airplane.