As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INVESTIGATED REPORT OF FLIGHT MANAGEMENT SYS LOSING LAST SAVED POSITION, THEN GOING TO NORTH ZERO DEGREES AND EAST ZERO DEGREES. REPLACED NR 1 FMC-3000 FLIGHT MANAGEMENT COMPUTER CARD WITH AN O/H REPLACEMENT CARD AND RELOADED DATABASE. FMS OPS NORMAL. RECOMMEND MFG SERVICE FACILITY INVESTIGATE AT TEAR-DOWN TO DETERMINE IF CAUSED BY FAILED INTERNAL COMPONENT OR IF CAUSED BY WATER CONTAMINATION.