As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD-RDU - FLT 6576 - DURING APPROACH, ABORTED THE APPROACH DUE TO FLAP ASYMMETRY CAPTION ILLUMINATING WHEN FLAPS SELECTED TO 9 DEGREES. AN EMERGENCY WAS DECLARED AND THE ACFT LANDED WITH NO FURTHER INCIDENTS. MAINTENANCE CLEANED EXCESSIVE GLYCOL FROM FLAP POSITION POTENTIOMETERS. ACFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (W)