As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF ROLL, LOST FUEL FLOW INDICATION FOR NR 2 ENGINE ALL OTHER INDICATIONS NORMAL. ACFT GROUNDED. FMC CDU BITE SHOWED 2 FAULTS -73-31052 ON FLT LEG 5 AND 6 FOR F/F TRANSMITTER. ACCOMPLISHED FIM 73-31 TASK 801. REPLACED THE F/F TRANSMITTER IAW AMM 73-31-01. COMPLETED LEAK CHECK AND NO LEAKS NOTED.