As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR RETURN DUE TO FUEL 1 LOW LEVEL EICAS MESSAGE ON CLIMB OUT. CREW EXECUTED QRH, NORMAL LANDING. FOUND MAGNETIC LEVEL INDICATOR FLOAT STOP CAME OFF AND WAS STUCK AT OTBD SCAVENGE EJECTOR. R & R MAGNETIC LEVEL INDICATOR IAW AMM 28-42-01. OPS CHECKED GOOD.