Regulacje i polityka gospodarcza · 23.12.2021

Airworthiness Directives; Airbus Helicopters

The FAA is superseding Airworthiness Directive (AD) 2020-11- 05, which applied to all Airbus Helicopters Model EC120B helicopters. AD 2020-11-05 required repetitive inspections of the tail rotor (TR) hub body for cracks and applicable corrective actions if necessary, and repetitive replacement of the attachment bolts, washers, and nuts of the TR hub body. This AD was prompted by a report of recurrent loss of tightening torque on several attachment bolts on the TR hub body. This AD retains certain requirements of AD 2020-11-05, adds repetitive inspections, requires additional corrective actions, and updates applicable service information. The FAA is issuing this AD to address the unsafe condition on these products.