As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON APPROACH FLAPS WOULD NOT EXTEND PAST 12 INCHES. FLAPS WOULD NOT RETRACT AFTER LANDING. FLAP/SLAT ELECTRONIC CONTROL UNIT HAD LOCKED OUT FLAPS DUE TO POWER DRIVE UNIT OVERHEAT FLAG. POWER DRIVE UNIT MOTOR FOUND SHORTED TO CASE. NEW POWER DRIVE UNIT INSTALLED AND FAULT CLEARED. ACFT RETURNED TO SERVICE.