What was found
DURING APPROACH, WHEN THE LANDING GEAR HANDLE WAS LOWERED THE LANDING GEAR CIRCUIT BREAKER POPPED AND THE GEAR FAILED TO EXTEND. THE GEAR HANDLE WAS RAISED, CIRCUIT BREAKER RESET, AGAIN WITH THE SAME RESULTS. MANUALLY EXTENDED THE LANDING GEAR THE GEAR ACCOMPLISHED ALL 3 GREEN LIGHTS. REPLACED LANDING GEAR POWER PACK MOTOR OPERATIONAL CHECK GOOD.