As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AFTER LANDING AT BOS MAINTENANCE FOUND THE POSITION 4 TIRE TREAD WAS DELAMINATED ON ENTIRE CIRCUMFERENCE OF TIRE AND HAD SEPERATED FROM THE TIRE- AIRPORT OPERATIONS IN CLT LOCATED THE SEPERATED TREAD ON THE DEPARTURE RUNWAY IN CLT - MAINTENANCE REPLACED THE TIRE PER JOB CARD 26L70032008.