What was found
DIAGNOSTICS REPORTS #2 ENGINE TREND DATA SHOWS A DECREASE IN EGTHDM. EGT INDICATION ERRORS ARE SUSPECT. GROUNDED - YES. FOUND FAULT CODE 77-20862 FOUND ALL T49.5 SECTOR PARAMETERS WITHIN LIMITS. REMOVED AND CLEANED AND REINSTALLED SECTOR 3 PROBE FOUND NO DEFECTS. AFTER INSTALLATION FOUND SECTOR 3 READINGS OUT OF LIMITS PER FIM 77-21 TASK 803. REMOVED AND REPLACED #2 ENGINE BOTTOM LEFT 45.5 PROBE AND CJ10 CORE HARNESS ASSY'S REF AMM 73-21-06 AND 77-21-01 GROUND VERIFICATION CHECKS NORMAL.