What was found
RT ENGINE OIL TEMP IN RED, OIL PRESSURE 50 PSI. ALL OTHER INDICATIONS NORMAL. ON LANDING RT ENG WAS SHUTDOWN. DATA OBTAINED FROM FDR INDICATES ENGINE SHUTDOWN BY FUEL FLOW. PILOT RETARDING CONDITION LEVER TO FUEL CUT-OFF POSITION. MX DETERMINED RT ENG HIGH OIL TEMP IN RED 2-4 MINUTES WITHIN LIMITS IAW GE CT7 OPERATING LIMITS, OIL PRESSURE WITHIN SPECS. FLUSHED ENGINE 3 TIMES, GROUND RAN BETWEEN FLUSHES 10 MINUTES, 88% NG. ALL INDICATIONS NORMAL PER GE TECHNICAL REP. OIL ANALYSIS REPORT SHOWED A HIGH LEVEL CONTENT OF SILICON 6.6 PPM, AND AS A PRECAUTIONARY MEASURE MAINTENANCE REMOVED AND REPLACED RT LUBE AND SCAVENGE OIL PUMP. PN ON/OFF 3065T25P01, SN OFF NMAS029, SN ON NMAAP362 OPS CHECKED GOOD.