As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6370 - IAD-HPN - DURING CRUISE, AN UNSCHEDULED LANDING DUE TO VIBRATION IN FLIGHT. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED FLAP HINGE BRACKET. OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURNED TO SERVICE. (M)