As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE TAXI FOR TAKEOFF, THE FLIGHT MANAGEMENT SYSTEM WOULD NOT ALIGN WITH THE RUNWAY THAT WAS SELECTED. THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED AND REPLACED THE NR 1 INTEGRATED AVIONICS COMPUTER IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 31-41-00. OPERATIONAL CHECKS WERE COMPLETED.