As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6379 - IAD-SYR - DURING TAXI, AIRCRAFT RETURNED TO GATE DUE TO WEATHER RADAR WENT INOP DURING TAXI. MAINTENANCE INSPECTED AND REMOVED AND REPLACED RADAR RT AND RADAR SCREEN, OPS CHECK OK. AIRCRAFT WAS RELEASED AND RETURNED TO SERVICE. (M)