AD/R22/10 - Tail Rotor Drive Shaft Damper Clips - Replacement - CANCELLED

What this is: This document officially cancels a previous aviation safety rule (called an Airworthiness Directive) that applied to Robinson R22 helicopters.

What it does: It removes a requirement that previously forced owners and operators to replace tail rotor drive shaft damper clips (small components that help stabilize the tail rotor) within 25 flight hours after November 1981.

Who it affects: Owners, operators, and maintenance engineers working on Robinson R22 series helicopters.

Why it matters: As of 7 May 2009, you no longer need to follow this specific replacement rule. The Civil Aviation Safety Authority (CASA) has determined this safety requirement is no longer necessary—likely because the manufacturer issued different guidance or the safety risk has been addressed through other means.