What was found
DISPLAY SOURCE MESSAGE DISPLAYED IN FLIGHT AND REVERTED TO CDS FAULT ON GROUND. REPLACED DEU NR 1 P/N 4081600-930. OPERATIONAL CHECK NORMAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DISPLAY SOURCE MESSAGE DISPLAYED IN FLIGHT AND REVERTED TO CDS FAULT ON GROUND. REPLACED DEU NR 1 P/N 4081600-930. OPERATIONAL CHECK NORMAL.