The Avcon King Air Mission Alternator provides 120 amps, 28Vdc power to a mission power bus which is isolated from the aircraft electrical system, and receives its field excitation from an independent battery. Allowing the customer to specifically identify and choose the special mission equipment on the mission power bus, the mission power bus is protected by circuit breakers that are accessible to the mission crew. The flight crew of the aircraft have complete control, and can disable the mission alternator system if required.