Airworthiness Directives; Bell Textron Canada Limited (Type Certificate Previously Held by Bell Helicopter Textron Canada Limited) Helicopters
airworthiness · Rule · Final rule. · Published 2021-02-25 · Effective 2021-04-01 · 86 FR 11415
Document
Document number
2021-03659
Federal Register citation
86 FR 11415
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Bell Textron Canada Limited (Type Certificate Previously Held by Bell Helicopter Textron Canada Limited)
Publication date
2021-02-25
Effective date
2021-04-01
FAA docket
Docket No. FAA-2020-0860
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Canada Limited (type certificate previously held by Bell Helicopter Textron Canada Limited) Model 429 helicopters. This AD was prompted by the introduction of a new life limit for the centrifugal force bearing (CFB). This AD requires determining the accumulated retirement index number (RIN) and removing each affected CFB from service before it accumulates 8,000 total RIN. The FAA is issuing this AD to address the unsafe condition on these products.