As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6543 - EWR-IAD - DURING TAXI, RETURNED TO GATE AT IAD WITH ONE DISCREPANCY CENTER AISLE OVERHEAD EMERGENCY EXIT SIGN INOP. MAINTENANCE INSPECTED AND RESECURED LOOSE CONNECTOR AT ROW 6, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)