As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AIR TURNBACK DUE TO DISPLAY SOURCE FAULT. DEFECT DESCRIPTION: WHEN IN CRUISE FLIGHT Ï¿½DSPLY SOURCEÏ¿½ ILLUMINATED ON BOTH P.F.DÏ¿½S RETURN TO BASE. RESOLUTION DESCRIPTION: LEG 1 FAULT 31-60041. DEU-1 SOFTWARE RESET. FIM 31-62 TASK 809 CARRIED OUT, FAULT CLEARED, AC OK TO CONTINUE SERVICE.