As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAIN REPORTED THAT DURING APPROACH, FLAPS LEADING EDGE DO NOT EXTEND DURING NORMAL SYSTEM OPERATION SHOWING MESSAGE 278 030 00 TRAILING EDGE FLAP DISAGREE. FLIGHT CREW ACCOMPLISHED THE QRH 9.40 PROCEDURE, CONFIRMING FAILURE. MAINTENANCE PERSONNEL PERFORMED THE FIM 27-51 TASK 820 PROCEDURE, DETECTING FSEU FAULT. AIRCRAFT WAS SENT TO THE HANGAR AND MAINTENANCE PERSONNEL REPLACED FLAP SLAT ELECTRONIC UNIT IAW AMM 27-51-01, TEST CORRECT.