As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 6483 - IAD-CHS - DURING CLIMB-OUT, RETURNED TO IAD DUE TO THE FLAP ASYMMETRY WARNING. FLIGHT CREW DECLARED AN EMERGENCY AND PERFORMED AN EMERGENCY DESCENT. AIRCRAFT LANDED AT IAD WITH NO FURTHER INCIDENTS. MAINTENANCE REPLACED THE LEFT FLAP POSITION TRANSDUCER. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)