As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 6517 - IAD-BOS - ABORTED TAKEOFF DUE TO TAKEOFF CONFIGURATION WARNING. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE RESET GUSTLOCK HANDLE, OPS CHECKS OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)