What was found
IN FLIGHT NR 2 ENGINE EGT INDICATOR FLUCTUATING 20 TO 30 DEGREES BOTH POINTER AND COUNTER, ALL OTHER PARAMETERS NORMAL. TROUBLE SHOT IN ACCORDANCE WITH TAFY MANUAL 77-21-00, FOUND THERMO COUPLE SHORTED AT 6 O'CLOCK POSITION AND HARNESS ISOLATION HIGH, REMOVED AND REPLACED HARNESS IN ACCORDANCE WITH M/M 77-21-05. INSTALLED PROBE IN ACCORDANCE WITH M/M 77-21-00. SAFETY WIRED EGT PROBE IN ACCORDANCE WITH M/M 70-00-00. PERFORMED OPERATIONAL CHECK ON ENGINE RUN-UP IN ACCORDANCE WITH M/M 71-00-00, FOUND NORMAL, NO FLUCTUATION NOTED AT THIS TIME.