As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - CREW REPORTED DURING APPROACH FLAPS STUCK AT APPROXIMATELY 2 DEGREES. EXTENDED FLAPS TO 15 USING ALTERNATE FLAP SYSTEM PER QRH. EMERGENCY DECLARED FLIGHT LANDED WITHOUT INCIDENT. REPLACED FLAP SLAT ELECTRONICS UNIT. SYSTEM GROUND CHECK NORMAL OPERATION.