As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JFK INFLIGHT T1558/26 SEPT - LEFT ENGINE OIL FILTER CLOG LIGHT ILLUMINATED. PERFORMED REQUIRED SHUTDOWN AND DIVERTED TO JFK. FOUND METAL IN OIL FILTER AND CHIP DETECTORS. CHANGED NUMBER ONE ENGINE. SYSTEM GROUND CHECKED NORMAL OPERATION.