Airworthiness Directives; Bell Helicopter Textron Canada Limited (Bell) Helicopters
airworthiness · Rule · Final rule. · Published 2018-05-21 · Effective 2018-06-25 · 83 FR 23349
Document
Document number
2018-10491
Federal Register citation
83 FR 23349
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Bell Helicopter Textron Canada Limited (Bell)
Publication date
2018-05-21
Effective date
2018-06-25
FAA docket
Docket No. FAA-2017-0667
Abstract
We are adopting a new airworthiness directive (AD) for Bell Model 407 helicopters. This AD requires repetitive inspections of the tail rotor (TR) driveshaft segment assemblies and a torque check of the TR adapter retention nuts. This AD was prompted by a report of an in- flight failure of the TR drive system. The actions of this AD are intended to detect and correct an unsafe condition on these products.