As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 6191 - IAD-BOS - AFTER LANDING, THE NOSEWHEEL STEERING LOCKED UP EXITING RUNWAY. BLEW BOTH NOSE TIRES ATTEMPTING TO LEAVE THE RUNWAY. AIRCRAFT WAS THEN TOWED TO GATE AND NOSEWHEEL STEERING BOX WAS LUBED AND REMOVED AND REPLACED BOTH N/G TIRES. OPS CHECK OK. AIRCRAFT WAS THEN RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)