What was found
IN CRUISE AT FL 29.0 NR 1 ENGINE EGT FLUCTUATED FROM 210 C TO 380 C, ALL OTHER PARAMETERS AS FOLLOWS: EPR 1.74, N2 97.5 PERCENT, FF 4900 LBS, N1 102.5 PERCENT, OIL TEMP 76 C, OIL PRESS 52 PSI, OAT -19 C. PERFORMED IN-FLIGHT ENGINE SHUTDOWN ABNORMAL CHECKLIST. NOTE: WINDMILLING OIL PRESS 22 PSI, TIME 22:27 Z. AIRCRAFT LANDED WITHOUT INCIDENT. REMOVED AND REPLACED THREE EGT THERMOCOUPLES AND REMOVED AND REPLACED THE #1 EGT INDICATOR IAW MM 77-20-1 AND 77-20-0 SYSTEM OPS CK NORMAL IAW 71-00 ALL PARAMETERS NORMAL.