As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: LEFT FUEL FILTER BYPASS LIGHT ILLUMINATED FOR APPROX 4 MINUTES. REMOVED AND REPLACED FUEL FILTER (AALA202509173276) AND FUEL PRESSURE SWITCH (AALA202509173475). PER AMM 73-11-02 AND AMM 73-34-01. LEAK AND OPERATIONAL CHECKS GOOD.