As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 3253 - CAPTAINS EFIS TUBE WENT BLANK, THEN BACK ON SEVERAL TIMES IN FLIGHT. AIRCRAFT WAS RETURNED TO DFW. MAINTENANCE REMOVED AND REPLACED THE DATA PROCESSING UNIT IAW SAAB MM. OPERATIONAL CHECK WAS GOOD IAW SAAB MM 34-24-00 AND AIRCRAFT WAS RETURNED TO SERVICE. (M)