What was found
DURING TC 78273000 FMC/CDU INTERROGATION FOUND INTERNAL EEC FAULT MESSAGE 73-31372 - ECONOMIC FAULT. ACFT GROUNDED. ON DEFERRAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING TC 78273000 FMC/CDU INTERROGATION FOUND INTERNAL EEC FAULT MESSAGE 73-31372 - ECONOMIC FAULT. ACFT GROUNDED. ON DEFERRAL.