What was found
PER TASK CARD 7827300 #2 ENGINE, ECONOMIC FAULT MESSAGE # 77-20872. " THE TOP LEFT EGT SIGNAL (T495S4) IS OUT OF RANGE. GROUNDED - YES. (RESOLVED ON W/O: 1963963 TASKCARD: N/R-00003 ) VERIFIED FAULT IS ACTIVE ON ALL FLIGHT LEGS AND S4 SHOWS DASHES IN INPUT MONITORING. PERFORMED AN EGT SYSTEM CLEANING AND SYSTEM INSPECTION REF MM 77-21-01-200-801-F00. ALL VALUES NOW WITHIN LIMITS AND TEMPS SHOW FOR S4 IN INPUT MONITORING. THIS CLEARS THE PLT. SEAMC DAVE WAS NOTIFIED.