AD 2012-10-01
Effective 06/29/2012 · Published 05/25/2012
Airworthiness Directives; Bell Helicopter Textron Canada Limited Helicopters
Summary
We are adopting a new airworthiness directive (AD) for Bell Helicopter Textron Canada Limited (BHTC) Model 427 helicopters which requires replacing certain tailboom attachment hardware and at certain intervals thereafter, determining the torque of that tailboom attachment hardware. This AD was prompted by a review of the tailboom attachment installation, which revealed that the torque value of the bolts specified in…