Airworthiness Directives; Boeing Model 727 Airplanes, Equipped With an Auxiliary Fuel Tank Having a Fuel Pump Installed
airworthiness · Rule · Final rule. · Published 2005-06-30 · Effective 2005-08-04 · 70 FR 37659
Document
Document number
05-12844
Federal Register citation
70 FR 37659
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Boeing Model 727
Publication date
2005-06-30
Effective date
2005-08-04
FAA docket
Docket No. FAA-2005-20355
Abstract
The FAA is adopting a new airworthiness directive (AD) for Boeing Model 727 airplanes equipped with an auxiliary fuel tank having a fuel pump installed. This AD requires revising the airplane flight manual to include limitations on operating the fuel pumps for the auxiliary fuel tank. This AD is prompted by a design review of the fuel pump installation, which revealed a potential unsafe condition related to the auxiliary fuel tank(s). We are issuing this AD to prevent dry operation of the fuel pumps for the auxiliary fuel tank, which could create a potential ignition source inside the auxiliary fuel tank that could result in a fire or explosion of the auxiliary fuel tank.