Airworthiness Directives; Bell Helicopter Textron Canada Limited Helicopters

FAA / Federal Register · 2020-21608

The FAA proposes to adopt a new airworthiness directive (AD) for certain Bell Helicopter Textron Canada Limited Model 429 helicopters. This proposed AD was prompted by the introduction of a new life limit for the centrifugal force bearing (CFB). This proposed AD would require determining the accumulated retirement index number (RIN) and removing each affected CFB from service before it accumulates 8,000 total RIN. The FAA is proposing this AD to address the unsafe condition on these products.