Airworthiness Directives; Bell Helicopter Textron Canada (Bell) Helicopters
airworthiness · Rule · Final rule. · Published 2013-10-31 · Effective 2013-12-05 · 78 FR 65178
Document
Document number
2013-25310
Federal Register citation
78 FR 65178
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Bell Helicopter Textron Canada (Bell)
Publication date
2013-10-31
Effective date
2013-12-05
FAA docket
Docket No. FAA-2013-0526
Abstract
We are adopting a new airworthiness directive (AD) for Bell Model 206L-4 and 407 helicopters. This AD requires replacing or reworking certain aft bearing caps. This AD was prompted by the manufacture of certain freewheel aft bearing caps without a lubrication channel to allow oil flow into the aft bearing support assembly. The actions of this AD are intended to prevent failure of the freewheel unit and subsequent loss of control of the helicopter.