As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNWANTED FUEL TRANSFER INTO NR 2 MAIN TANK WITH FILL VALVE SWITCH IN CLOSED POSITION AND NR 2 MAIN FILL VALVE LIGHT INDICATING FILL VALVE IS IN CLOSED POSITTION. A WELD FAILED ALLOWING A PRESSURE RELIEF VALVE TO COME OFF THE FUEL MANIFOLD. REPLACED RUPTURED FUEL PUMP TEE ASSEMBLY.