What was found
NR 1 ENGINE EEC BITE SHOWS FAULT 77-10841, THE TOP RT EGT SIGNAL IS OUT OF RANGE. LOGGED FOR 4 OUT OF 10 LEGS. FAULT 77-10841 IS AN ECONOMIC LEVEL FAULT. ACFT GROUNDED. ACCOMPLISHED T/S FOR FAULT 77-10841 IAW FIM 77-21, TASK 801. EEC TEST IAW MM 73-21-00-700-804-F00. CONFIRMED FAULT. PERFORMED NR 1 ENGINE EGT CONNECTOR CLEANING IAW MM 77-21-00-140-801. ALL TABLE 2 CONNECTORS CLEANED. T49.5 READINGS BEFORE CLEANING: S1-93.00, S2-14.87, S3-16.25, S4-34.25. T49.5 READINGS AFTER CLEANING: S1-26.25, S2-13.00, S3-13.87, S4-28.25. READINGS NOW WITHIN AMM AND FIM LIMITS. PERFORMED NR 1 ENGINE EEC TEST IAW MM 73-21-00-700-804-F00. NO FAULTS NOTED.