As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A TRAILING EDGE FLAP DISAGREE LIGHT ILLUMINATED ON FINAL AS FLAPS MOVED FROM 15 TO 20. FLAPS STOPPED MOVING AT APPROXIMATELY 18. ALTERNATE FLAPS 20 SELECTED AS NON-NORMAL ACCOMPLISHMENT FLAPS WENT TO 20 IAW THE CHECKLIST. FLAPS LEFT IN 20 FOR LANDING AND AT THE GATE. THE AIRCRAFT WAS GROUNDED. MAINTENANCE REPLACED THE OUTBOARD NR 5 FLAP TRANSMISSION IAW AMM 27-51-06. OPS CHECKED GOOD.