What was found
CAUTION MESSAGE (EICAS) ENG 4 OIL FILTER IN FLIGHT. TIME 0910Z. FIRE HANDLE NOT PULLED. ENG SHUTDOWN.(<P>C/W OIL SYS CONTAMINATION EXAMINATION IAW AMM 79-00-00, FOUND EXTENSIVE CONTAMINATION LEADING TO ENGINE CHANGE REQUIRED. R/R FILTER IAW AMM 79-21-04. FOUND CONTAMINATION IN FILTER. R/R STARTER VALVE #4 IAW AMM 80-11-02. OPS CHECK GOOD. REF IPC 80-11-02-02B REV 86. C/W WO 129315 TASK CARD 71-099-02-01 FOR ENG R/R. NO FURTHER DEFECTS NOTED</P>)