What was found
FLT 956 - KSA - DURING STAGE 2 CLIMB SEGMENT AT POWER REDUCTION TO CLIMB POWER, EPR DROPPED .30, FUEL FLOW DROPPED TO 1000 PPH, AND EGT ROSE TO NEAR REDLINE. AIR RETURN TO KSA. MAINTENANCE FOUND PRBC PS-4 LINE LEAKS 1PC 75-30-0-1, ITEM 30 PG-0/FIG-1. REMOVED AND REPLACE PS-4 LINE WITH SERVICEABLE LINE. REMOVED AND REPLACED P AND D VALVE FOR PRECAUTIONARY PER MM 73-12-1. AIRCRAFT RELEASED FOR SERVICE AND NO FURTHER INCIDENT. (M)