As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6606 - IAD-ROC - DURING CRUISE, AIRCRAFT RETURNED TO GATE DUE TO WEATHER RADAR INOP. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED RADAR R/T, OPS CHECK OK. AIRCRAFT WAS RELEASED AND RETURNED TO SERVICE. (M)