As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MTNA'S 800 HR INSPECTION ON 758FX IT WAS IDENTIFIED THAT: LEFT FUEL QTY FOUND TO BE INACURATE, WITH EMPTY LEFT SIDE IS 77OLB OF FUEL MX: SYSTEM T/S PERFORMED, DETERMINED #4 PROBE AT FAULT PER C408 MM CHAPT 28-40-00. REPLACED #4 LEFT FUEL QTY PROBE AND SYSTEM CHECKED GOOD PER C408 MM CHAPT 28-40-05 AND 28-40-00.