As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED FLAPS FAIL CAUTION MESSAGE ON APPROACH TO CLT. FLAPS FAILED AT 20 DEGREES AND WOULD NOT EXTEND ANY FURTHER IN FLIGHT. AIRCRAFT LANDED IN CLT WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED, CLEANED AND LUBED LEFT AND RIGHT FLAP FLEX SHAFTS AND PERFORMED CHECKS USING AIRCRAFT MAINTENANCE MANUALS. NO DEFECTS FOUND AND NEUTRAL RIG MAINTAINED. AIRCRAFT RELEASED FOR SERVICE.