As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD - DAY - FLT 6292 - DURING CLIMB-OUT, RETURNED DUE TO THE FLAP ASYMMETRY WARNING SYSTEM ACTIVATING IN FLIGHT. AIRCRAFT LANDED AT IAD WITH NO FURTHER INCIDENTS. MX REPLACED THE RT FLAP POSITION TRANSDUCER. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)