As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6203 - IAD-MHT - DURING CLIMB, MADE AN UNSCHEDULED LANDING DUE TO RIGHT PROP VIBRATION. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED INSTALLED 3 SHIMS TO RIGHT SPINNER, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)