As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS ON TAKEOFF, AFTER ROTATION, FLAPS 1 AND FLAPS UP BUGS DISAPPEARED FROM BOTH PFDS WITH VERIFY GW MESSAGES IN SCRATCHPAD. GW WAS MANUALLY INPUT PRIOR TO T/O. MAINTENANCE ACCOMPLISHED PSEU BITE TEST IAW MM 32-09-10. FOUND FAULT CODE 31-55008. ACCOMPLISHED FIM 3-51-00-810-809. OPS CHECKED NORMAL . NO FAULT NOTED.