As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH PUMPS ON, FUEL PUMPS TO CENTER TANK LOST OF ELECTRICAL POWER ON CLIMB OUT. PERFORMED AC GENERATION SYSTEM TEST IAW AMM 24-21-00. OPS CHECK PASS WITH NO DEFECTS NOTED. REF BLOCK 2 OF LP 737-004-1877 FOR CENTER TANK FUEL QUANTITY INDICATION ERROR. CENTER TANK FUEL QUANTITY INDICATOR SHOWS INACCURATE READING.