2022-13858: Airworthiness Directives; Bell Textron Canada Limited Helicopters

Summary

The FAA proposes to supersede Airworthiness Directive (AD) 2021-26-08, which applies 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 requires removing certain nuts from service; installing newly designed nuts; applying a specific torque, and a torque stripe to each newly installed nut; after the installation of each newly designed nut, inspecting the torque; and depending on the inspection results, either applying a torque stripe, or performing further inspections and removing certain parts from service. AD 2021- 26-08 also prohibits installing any affected nut on any tail rotor drive shaft (TRDS) disc pack (Thomas) coupling. Since the FAA issued AD 2021-26-089, the FAA determined certain torque values and part numbers (P/Ns) need to be revised. This proposed AD would require removing certain nuts from service; installing newly designed nuts; applying torque and a torque stripe; and additional corrective actions if necessary. This proposed AD would also prohibit installing any affected nut on any TRDS Thomas coupling, as specified in a Transport Canada AD, which is proposed for incorporation by reference (IBR). The FAA is proposing this AD to address the unsafe condition on these products.

The agency’s own summary, as published.

What this changes

Amends 1 part of the Code of Federal Regulations — the standing rules this notice rewrites.

• 14 CFR 39 Airworthiness Directives