EASA AD CF-2016-13R1
Main Rotor Drive — Loss of Lubrication to the Freewheel Assembly
The Canadian Airworthiness Directive CF-2016-13R1 titled 'Main Rotor Drive — Loss of Lubrication to the Freewheel Assembly' applies to Bell Helicopter Textron Canada Limited models 206A, 206B, 206L series, and 407 helicopters. It addresses the risk of main rotor mast failure caused by blocked oil restrictors in the freewheel lubrication circuit, which can lead to loss of helicopter control. The directive mandates inspections, cleaning, and possible replacement of components to ensure proper lubrication flow.
Airworthiness DirectiveMaintenanceSafety MgmtBell 206Bell 407Bell Helicopter Textron Canada 206ABell Helicopter Textron Canada 206BBell Helicopter Textron Canada 206L seriesBell Helicopter Textron Canada 407