EASA Regulations for Bell Textron Canada Limited 206L-4

EASA AD CF-2022-33

Tail Rotor Drive — Failure of Tail Rotor Drive Shaft with Bonded Adapters

The Canadian Airworthiness Directive CF-2022-33 addresses the failure risk of tail rotor drive shafts with bonded adapters on Bell Textron Canada Limited model 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 helicopters. It mandates inspections and proof load tests to detect adhesive bond degradation in segmented tail rotor drive shaft assemblies. This directive aims to prevent loss of tail rotor drive and potential loss of helicopter control.