As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM, LEFT ENG FUEL FLOW IS ZERO FUEL USED ALSO LOW. ALSO INTERMITTENT. CLEANED AND TIGHTENED PYLON CONNECTOR D4210P REF WDM 73-31-11 PP TWO. RAN ENG ALL INDICATIONS NML. ACCOMPLISHED FIM 28-41-00 FIG 107, NO FAULTS NOTED.