As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TROUBLESHOT ERRATIC RIGHT FUEL QUANTITY GAUGE TO DEFECTIVE FLOAT IN RIGHT TANK. UPON REMOVAL OF FLOAT, FOUND PART NUMBER OF LEFT FLOAT. INSPECTED LEFT FLOAT AND FOUND PART NUMBER OF RIGHT FLOAT. FUEL FLOATS HAD BEEN INSTALLED IN REVERSE POSITIONS FROM FACTORY. AIRCRAFT TOTAL TIME, 260.2 HOURS.