What was found
HAD L OIL FILTER STATUS MSG. SHUT ENG DOWN. SYSTEM CHECKED IAW FIM 79-21-00, FIG 104, CHECKED CHIP DETECTORS. REPLACED OIL FILTER, REPLACED DIFF PRESSURE SWITCH IAW MM 79-35-01, CHECKED CIRCUIT BETWEEN SWITCH AND EICAS COMPUTER CONNECTOR. RUN ENGINE TEST 3A FOR 20 MIN, NO MSG NOTED AND LEAK CHECK OF CONNECTORS GOOD.