Transport i lotnictwo · 18/11/1997

Allison Engine Company Model 250-C47B Turboshaft Engines: Airworthiness Directive Amendment

The FAA has issued an amendment to the existing airworthiness directive for Allison Engine Company Model 250-C47B turboshaft engines, requiring the installation of a new hydromechanical unit and ECU, and revising maintenance procedures to clear the ECU of faults prior to each flight.