Airworthiness Directives; The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER Series Airplanes
airworthiness · Rule · Final rule. · Published 2010-01-14 · Effective 2010-02-18 · 75 FR 2062
Document
Document number
2010-398
Federal Register citation
75 FR 2062
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2010-01-14
Effective date
2010-02-18
FAA docket
Docket No. FAA-2009-0657
Abstract
We are adopting a new airworthiness directive (AD) for certain Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. This AD requires replacing the engine fuel shutoff valves for the left and right main tanks. This AD results from a report of a failed engine start, which was caused by an internally fractured engine fuel shutoff valve. We are issuing this AD to prevent the failure of the valve in the closed position, open position, or partially open position, which could result in engine fuel flow problems and possible uncontrolled fuel leak or fire.