As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIGHT DIVERTED TO IAD DUE TO BOTH FMC'S NOT OPERATING NORMALLY. LANDED OVERWEIGHT. *S/D* THE FLIGHT MANAGEMENT SYSTEM SOFTWARE PROGRAM COULD NOT COMPLETELY PROCESS THE NEW NAV DATA BASE SOFTWARE (P/N UA4-9807-002). NEW NAV DATA BASE SOFTWARE WAS CREATED AND INSTALLED ON THE FLEET.