As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FAT - EN ROUTE SFO TO BFL, AIRCRAFT DIVERTED TO FAT DUE TO REPORTED RIGHT ENGINE LOW OIL PRESSURE INDICATION. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND FITTING ON OIL SUPPLY LINE LOOSE. TIGHTENED B-NUT. PERFORMED ENGINE RUN. LEAK CHECK AND OIL PRESSURE INDICATION NORMAL. AIRCRAFT RETURNED TO SERVICE. (M)