What was found
(CAN) NR 2 PACK RAM AIR LOUVER WILL NOT POSITION PROPERLY ON GROUND, IN FLIGHT IT STAYS AT ONE O`CLOCK POSITION. C/B TRIPPED WHEN PACK NR 2 IS OPERATED IN MANUAL. NR 2 PACK CONTROLLER INOP IN AUTO AND MANUAL. FOUND NO CONTINUITY BETWEEN RAM AIR ACTUATOR LOUVERS NR 2. CONNECTOR 2162-P6 PIN 1,2,3 TO RAM AIR INLET RELAY. FOUND NR 2 HEAT EXCHANGER AT 4 FT FROM NR 2 RAM AIR ACTUATOR CONNECTOR HAD A TOTAL OF 7 WIRE INSULATORS DAMAGED TO CENTRAL CONDUCTOR, WHEN POWER WAS APPLIED, ELECTRICAL ARCING WAS PRODUCED BETWEEN THOSE WIRES CAUSING C/B TO TRIP.