EASA AD CF-2021-51R1
Equipment / Furnishings — Water Bombing System — Un-commanded Water Door Opening
Airworthiness Directive CF-2021-51R1 addresses un-commanded water door opening issues in Viking Air Ltd. CL-215-1A10 (CL-215 variant) and CL-215-6B11 (CL-215T variant) aircraft. This directive mandates modifications to water door actuator microswitches, solenoid valve common grounds, and prohibits installation of certain solenoid valve parts without back EMF protection. It updates previous requirements to improve safety related to the water bombing system.
Airworthiness DirectiveMaintenanceSafety MgmtViking Air CL-215Viking Air CL-215-1A10Viking Air CL-215-6B11