As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW REPORTED FLAP ASSYMETRY ANNUNCIATOR LIGHT INDICATION AND SLIGHT RT ROLL ON APPROACH, WHEN FLAPS EXTENDED TO 20 DEGREE POSITION. FOUND LT FLAP FOLLOW-UP SWITCH ASSY. S517 AND LT FLAP POSITION TRANSMITTER MT111 ADJUSTMENTS OUT OF SERVICE LIMITS AND ADJUSTED AS REQUIRED IAW MM 27-50-00. FLAP SYS OPS CHECKS OK FOLLOWING ADJUSTMENTS, NO FAULTS INDICATED.