As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PERFORMED TASK CARD 78273000 "INTERROGATE THE FMC CDU FOR ENGINE FAULTS" NR 1 ENGINE HAD CODE 73 31711 / NR 2 ENGINE HAD CODE 73 31712 BOTH ARE "ADIRU 1 TAT DATA AND ADIRU 2 TAT DATA DISAGREE" SHORT TERM FAULT. PERFORMED FIM 73 28 TASK 808 EEC TEST PASSES FOR BOTH ENGINES FAULT NO LONGER ACTIVE.