As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 318 OAK-IAD, CREW EXECUTED AN EMERGENCY LANDING DUE TO FUEL LOSS OF 1000 LBS UNACCOUNTED FOR ON LEFT SIDE OF AIRCRAFT. COULD NOT ISOLATE LEAK BUT IT STOPPED AFTER CENTER TANK CLOSED. COULD BE APU OR CENTER TANKS. TECHNICIAN SUMPED L&R WING TANKS PER AMM 12-11-28. FOUND 1+ QTS WATER IN EACH WING TANK (INNER). CTR TANKS NORMAL. NO FUEL LEAKS NOTED AT THIS TIME. INTERROGATION OF CFDS (FQIC) NORMAL. OK FOR SERVICE.