What was found
PILOTS OBSERVED A 'FUEL FILTER BYPASS' INDICATION. FUEL FILTERS WERE CHANGED. INDICATION WAS STILL THERE. CHANGED LEFT ENGINE FUEL DIFFERENTIAL PRESSURE INDICATOR. PROBLEM FIXED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PILOTS OBSERVED A 'FUEL FILTER BYPASS' INDICATION. FUEL FILTERS WERE CHANGED. INDICATION WAS STILL THERE. CHANGED LEFT ENGINE FUEL DIFFERENTIAL PRESSURE INDICATOR. PROBLEM FIXED.