What was found
TPA - FLT 1580 - EN ROUTE FROM PHL TO TPA, A BURNING OIL SMELL WAS REPORTED COMING FROM THE LEFT PACK DURING FLIGHT. FLIGHT CONTINUED AND LANDED AT TPA WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND THE NR 1 ENGINE AS THE SOURCE OF THE ODOR. REMOVED AND REPLACED THE NR 1 ENGINE ASSEMBLY PER JOB CARD J371-00-01. OPERATIONAL CHECK AND LEAK CHECK GOOD. ALSO, REMOVED AND REPLACED BOTH WATER SEPARATOR BAGS (P/N V121-1) DUE TO STALE AIR SMELL. (M)