As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING APPROACH , PFD 1 & MFD 1 BLANKED OFF TOGETHER 4 TO 5 TIMES. NO EICAS MESSAGE POSTED. FLIGHT DIRECTOR ENGAGED IN APP MODE. AUTOPILOT DID NOT DISENGAGE. RUNWAY IN SIGHT AND APPROACH CONTINUED VISUALLY. ON GROUND, ALL SYSTEM NORMAL. ON RETURN FLIGHT TO MUNICH, PFD 1 AND MFD 1 BLANKED OFF 4 TO 5 TIMES DURING APPROACH.DURING TOUBLESHOOTING, FOUND ESS TRU 1 FAULTY.ESS TRU 1 TRU REPLACED.