As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH, SELECTED FLAPS 12 & SLATS DOWN. SLATS & KRUEGERS CAME DOWN NORMALLY BUT FLAPS DID NOT & RECEIVED A SLAT/FLAP MAINT EICAS MESSAGE. AFTER LANDING, FLAPS/SLATS AND KREUGERS ALL RECTRACTED NORMALLY. TROUBLESHOT FLAP SYS TO PDU. REMOVED FLAP PDU AND INSTALLED REPLACED PDU. PERFORMED SYS OPS CHECKS WITH NO DEFECTS NOTED AT TIME OF TEST. ALL WORK DONE IAW AMM 27-57-45, 27-51-05 AND CMP'S 275210 AND 275101. AMM REV 21.