Airworthiness Directives; Bell Helicopter Textron Canada Model 407 Helicopters
airworthiness · Rule · Final rule. · Published 2000-03-01 · Effective 2000-04-05 · 65 FR 10937
Document
Document number
00-4794
Federal Register citation
65 FR 10937
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Bell Helicopter Textron Canada Model 407
Publication date
2000-03-01
Effective date
2000-04-05
FAA docket
Docket No. 98-SW-64-AD
Abstract
This amendment adopts a new airworthiness directive (AD), applicable to Bell Helicopter Textron Canada (BHTC) Model 407 helicopters, that requires replacing a certain hydraulic relief valve (valve) with a different valve. This amendment is prompted by the discovery of a manufacturing defect in a valve. The actions specified by this AD are intended to prevent intermittent loss of hydraulic pressure to the flight controls and subsequent loss of control of the helicopter.