As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH WITH FLAPS 20 DEGREES, THE FLAPS FAIL CAUTION MESSAGE ILLUMINATED WHEN FLAPS WERE SELECTED TO 30 DEGREES. THE CREW FOLLOWED THE QRH AND LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED FAULT ISOLATION PROCEDURES. NO FAULTS WERE FOUND. THE FLAP SYSTEM WAS RESET AND OPERATIONALLY CHECKED GOOD. THE AIRCRAFT WAS RELEASED FOR SERVICE.