AD 2013-22-01
Effective 12/05/2013 · Published 10/31/2013
Airworthiness Directives; Bell Helicopter Textron Canada (Bell) Helicopters
Summary
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 lo…