As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED A FLAPS FAIL AT 20 DEGREES MESSAGE AFTER TAKEOFF. CREW RETURNED TO DCA AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND CYCLED CIRCUIT BREAKERS IN ACCORDANCE WITH THE SERVICE LETTER. AIRCRAFT WAS RELEASED FOR SERVICE.