The FAA has issued the following two airworthiness directives for Bell 206 helicopters:
Main Rotor Blade Delamination: The FAA is adopting a new airworthiness directive (AD) for Bell Textron Canada Limited Model 206L, 206L-1, 206L-3 and 206L-4 helicopters with a certain part-numbered main rotor (M/R) blade installed under Supplemental Type Certificate SR02684LA. This AD was prompted by delamination of M/R blades. This AD requires a repetitive inspection for delamination and, depending on the results, removing the M/R blade from service and reporting certain information.
This AD requires action before the M/R blade accumulates 400 total hours time-in-service or 2,400 engine starts since initial installation on any helicopter or within 100 hours TIS after the effective date of this AD, which is Dec. 23, 2022. The complete AD may be viewed here.
Tail Rotor Drive Shaft Thomas Coupler: The FAA is superseding airworthiness directive (AD) 2021-26-08, which applied to certain Bell Textron Canada Limited Model 206, 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3 and 206L-4 helicopters. AD 2021-26-08 required removing certain nuts from service, installing newly designed nuts, and applying a specific torque and a torque stripe to each newly installed nut. Since it issued AD 2021-26-08, the FAA determined certain torque values and part numbers need to be revised.
The new AD, 2022-20-04, has an effective date of Dec. 23, 2022. You may view this new AD and the changes made here.
