As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW SHUTDOWN NR 1 ENGINE AFTER OIL FILTER BYPASS LIGHT ILLUMINATED. CREW THEN LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE OIL BYPASS SWITCH IAW MM 79-35-11. ALSO REMOVED AND REPLACED MAIN OIL STRAINER IAW MM 72-61-53 AS A PRECAUTION. NO DEFECTS NOTED. OPS AND LEAK CHECKS OK IAW MM 79-35-0 AND MM 72-61-53. AIRCRAFT RETURNED TO SERVICE.