What was found
DURING CRUISE FLIGHT, ERRATIC EGT INDICATION WAS NOTED ON NR 2 ENGINE. EGT PEAKED AT 810 DEGREES FOR APPROXIMATELY 5 SECONDS. CREW PERFORMED PRECAUTIONARY ENGINE SHUTDOWN OF NR 2 ENGINE IAW QRH PROCEDURES. INSPECTED NR 2 ENGINE ITT WIRING AND FOUND LOOSE TERMINAL LUG ON THE ENGINE ITT BUSS BAR. TIGHTENED TERMINAL LUG AND COMPLETED ENGINE POWER ASSURANCE RUNS WITH NO DEFECTS NOTED. ALSO VERIFIED SUSPECTED OVERTEMP INDICATION TO BE WITH ACCEPTABLE LIMITS FOR THE ENGINE.