FAA Issues Airworthiness Directive for AgustaWestland A109S Electrical System

 - November 14, 2012, 12:30 PM

The FAA has issued an Airworthiness Directive for the AgustaWestland A109S requiring the modification of the electrical power distribution system to carry a higher electrical load. It was prompted by an electrical failure that resulted from inadequate functioning of the 35 amperes “Batt Bus” circuit breaker. The AD would require modifying the electrical power-distribution system to prevent failure of the circuit breaker, loss of electrical power to instruments powered by the “Batt Bus” system and subsequent loss of control of the helicopter.

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