What was found
ENROUTE FROM KBWI TO KSBD, CREW REPORTED LT ENG FILTER EICAS MESSAGE. CREW ELECTED A LT ENG SHUTDOWN FOLLOWED BY A DIVERSION WITH AN EMERGENCY DECLARATION TO KDEN. LANDING WAS WITHOUT INCIDENT & NO ADDITIONAL PRECAUTIONARY ACTIONS TAKEN. ON ARRIVAL, ACFT WAS GROUNDED FOR MAINTENANCE. LINE MAINTENANCE NOTED DEBRIS IN B SUMP & SCAVENGER FILTER. INDEPENDENT, EXTERNAL ANALYSIS OF OIL SAMPLES ADVISED HIGH LEVELS/ADVANCED WARNINGS OF WEAR METALS ATI POWERPLANT ENGINEERING CONCLUDED ENGINE SERIAL NR 690323 COULD NOT CONTINUE IN SERVICE. LT ENG R & R IAW TASK CARDS ATI-24-003-00-01, ATI-26-000-01-01, ATI-36-005-00-05, ATI-71-602-00-03, & ATI-71-999-04-01. OPS CHECKED SAT. NO FAULTS NOTED, ACFT RELEASED TO SERVICE.