As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED THAT UPON TAKEOFF THE FLAPS WERE STUCK AT 15 DEGREE POSITION AND WOULD NOT RETRACT TO 0 DEGREES, BUT THEY MOVED TO 30 DEGREES. THE CREW DECLARED AN EMERGENCY AND RETURNED TO DEPARTURE. THE ACFT PERFORMED A 15 DEGREE FLAPS LANDING AT DEPARTURE. THE ACFT WAS REMOVED FROM SERVICE. R & R THE HYD CONTROL FLAP VALVE IAW MM 27-54-71, RAI 10000 AND 27-51-00-OPT 10020. THE OPS CHECK WAS NORMAL. THE ACFT WAS RETURNED TO SERVICE.