Airworthiness Directives; Dornier Model 328-100 Series Airplanes

This amendment adopts a new airworthiness directive (AD) that is applicable to all Dornier Model 328-100 series airplanes. This action requires revising the Airplane Flight Manual to provide the flight crew with the appropriate procedures necessary to verify correct operation of the primary alternating current (AC) pump of the main hydraulic system before takeoff. This action is necessary to prevent takeoff with an inoperative pump, which could result in an extended takeoff roll or a rejected takeoff, and consequent runway overrun, structural damage to the airplane, and possible injury to occupants. This action is intended to address the identified unsafe condition.