What was found
AIR TURNBACK. FLIGHT CREW REPORTED ON CLIMBOUT WITH EPR SET AT 2.20, THE NR 1 ENGINE N1 WAS APPROXIMATELY .7 LOW. NR 1 EGT WAS APPROXIMATELY 40 LOW, N2 APPROXIMATELY .5 LOW AND FUEL FLOW 800LB LOW. WHEN THROTTLES WERE MATCHED AND ALL OTHER ENGINE GAUGES MATCHED, THE NR 1 EPR WAS HIGH. PERFORMED EPR SYSTEM TEST PER MM 77-11-00 AND FOUND DAMAGED PT2 SENSE LINE. REPLACED PT2 SENSE LINE PER MM 20-10-51. PERFORMED ANOTHER EPR SYSTEM TEST PER MM 77-11-00 AND SYSTEM CHECKED GOOD. PERFORMED RIG CHECK OF THRUST REVERSERS AND THROTTLES PER MM 76-11-00 AND CHECKED OK. PERFORMED ENGINE RUN TRIM CHECK PER MM 71-00-00 AND CHECKED TO STATED VALUES. ALSO REPAIRED DAMAGED WIRING TO NR 1 ENGINE FWD BOOST PUMP PER.