As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLAP DISAGREEMENT INVOLVING OUTBOARD FLAP PAIRS. QRH FOLLOWED WITH NO SUCCESS, RETURNED TO FIELD. FLAP EXTENDED NORMALLY ON APPROACH. RETRACTED NORMALLY ON GROUND. CHECKED ALL FLAP ACTUATORS WITH BREAKOUT BOX, NO DEFECTS APPARENT. SMOOTHED OUT BURR ON LEFT INBOARD FLAP TRACK. RERACKED FCU, OPS CHECKED FLAPS 30 TIMES WITH NO DEFECT AS PER MM 57-50-00.