As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT RETURNED TO BLOCKS DUE TO LE SLAT DISAGREE MSG DISPLAYED AND SLATS LOCKED OUT AT 5 UNITS. FOUND M528 MODULE FAULT, M524 HYD PRESS SW AND M525 HYD PRESS SW FAULT BALLS SET. ALL CLEARED. RESET FSEU BREAKERS FLAPS AND SLATS OPERATED NORMALLY AFTER RESET