As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 504 - DDAY-KSAN - AFTER TAKEOFF, OUTBOARD FLAP WOULD NOT RETRACT BEYOND 5 DEGREES. SEVERAL ATTEMPTS TO RETRACT TO 0 DEGREES FAILED. AIRCRAFT RETURNED TO KDAY AND LANDED WITHOUT FURTHER INCIDENT. INSPECTED AND PERFORMED OPERATIONAL CHECK OF FLAP SYSTEM. NO DEFECTS NOTED. ICING CONDITIONS PREVALENT AT KDAY. SUSPECT ICE BUILD-UP IN RIGHT TRAILING EDGE AREA. PERFORMED FOLLOW-UP INSPECTION. NO DEFECTS NOTED. (M)