As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF ROLL, WITH AIR CONDITIONING PACKS TURNED OFF, THERE WAS A STRONG JET FUEL ODOR IN FLIGHT DECK. ODOR DISSIPATED WHEN PACKS WERE SWITCHED ON. FOUND CENTER FUEL TANK RIB "O" CENTER MEMBER AND LT MAIN TANK RIB 4 AFT SKIN JOINT LEAKING. ALL WORK PERFORMED IAW AMM 28-11-00-796-111 AND IAW AMM 28-11-00.