EASA AD 2021-0171R1
Tail Rotor — Pitch Control Rod Bearing — Inspection / Replacement
EASA Airworthiness Directive 2021-0171R1 is an updated regulatory requirement addressing inspection and replacement of the tail rotor pitch control rod bearing on Airbus Helicopters SA 365, AS 365, and EC 155 models. This directive mandates inspections of the tail rotor gearbox oil level and magnetic plug, as well as replacement of affected double bearings with improved parts to ensure safe yaw control. It applies to all serial numbers of the specified helicopter models.