As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUEL HAS DECREASED 600 LBS IN 15 MINUTES WITH NO ENGINES OR APU RUNNING. ACCOMPLISHED FUEL QTY, OPS TEST IAW 28-41-00, ALSO PERF FQIS COMPARISON CHECK WITH STICKS IAW 28-41-00, ALL TANKS WELL WITHIN TOLERANCE. NO FAULTS LOGGED, ALL CK NORMAL.