EASA AD CF-2011-42R1
Fuselage - Longeron Cracking - Inspection / Repair.
The Canadian Airworthiness Directive CF-2011-42R1 addresses fuselage longeron cracking in Bell Helicopter Textron Canada Limited Model 407 helicopters, specifically those equipped with upper left longeron assemblies part numbers 206-031-314-037, 206-031-314-177, or spare assembly 206-031-314-219B. This directive mandates inspections and repairs to detect and correct cracking in the upper left longeron to maintain structural integrity and ensure flight safety. It applies to helicopters with serial numbers 53000 through 53900, 53911 through 54061, and 54300.
Airworthiness DirectiveMaintenanceSafety MgmtBell 407Bell Helicopter Textron Canada Limited Model 407