AD 2022-10-06
Effective 06/28/2022 · Published 05/24/2022
Airworthiness Directives; Rolls-Royce Corporation Turboshaft Engines
Summary
The FAA is superseding Airworthiness Directive (AD) 2017-18- 14, which applied to certain Rolls-Royce Corporation (RRC) 250 model turboshaft engines. AD 2017-18-14 required repetitive visual inspections and fluorescent penetrant inspections (FPIs) of the 3rd- stage turbine wheel and removal from service of the 4th-stage turbine wheel. This AD was prompted by in-service turbine blade failures that resulted in the los…