As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTS AFTER LT ENG START 'LT OIL FILTER' EICAS MSG CAME ON BRIEFLY AND WENT AWAY. NOW HAVE OIL FILTER STATUS MSG. PER MM CHANGED OIL FILTER & CHECKED ALL CHIP DECT'S WITH DEFECTS NOTED. DIFFERENTIAL PRESSURE SWITCH NEED TO BE CHANGED WITHIN 100 HRS BY PTT 81413.50. REPLACED OIL DIFFERENTIAL SWITCH PER MM. RAN ENG, OPS GOOD.