As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED FLAPS FAILED AT 20 DEGREES. AIRCRAFT RETURNED TO CLT LANDING WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE FECU AND CHECKED FLAPS SYSTEM. NO PROBLEMS WERE FOUND. TROUBLESHOOTING AND CHECKS WERE DONE USING THE AIRCRAFT MAINTENANCE MANUAL AND FIM. AIRCRAFT WAS RELEASED FOR SERVICE.