As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DECLARED EMERGENCY, ON APPROACH DURING FLAP EXTENSION FLAPS STUCK AT 12 UNITS. INITIATED GO AROUND AND FOLLOWED QRH ALL FLAP EXTENSION TO 15. FLAPS REMAINED AT 15 AFTER LANDING. FLAP SLAT ELECTRONIC UNIT FAULTING TRAILING EDGE ASYMMETRY. R&R FLAP POSITION TRANSMITTER PER AMM.