As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
2 FAULTS ARE SHOWN ON THE FMC CDU 73-31631 AND 73-31632. ACFT GROUNDED. PERFORMED FIM 73-28, TASK 802, ADIRU TOTAL PRESSURE DATA IS MISSING FROM A DEU-FAULT ISOLATION. EEC 1 AND EEC 2 PASS WITH NO MAINTENANCE MESSAGES AND BOTH SHOW A VALID TOTAL PRESSURE FROM ADIRU 1 AND ADIRU 2. PERFORMED GOOD REPAIR CONFIRMATION IAW FIM 73-28, TASK 802, STEP H.