As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER AIRCRAFT WAS IN CRUISE, ATC REPORTED THAT ANOTHER AIRCRAFT REPORTED SOME RUBBER ON THE RUNWAY JUST AFTER TAKEOFF. ALL INDICATIONS WERE NORMAL AND CREW CONTINUED TO DESTINATION. (SJU) SAN JUAN FIRE AND RESCUE WERE NOTIFIED AND AIRCRAFT MADE AN UNEVENTFUL LANDING. IT WAS DISCOVERED THAT THE RECAP HAD SEPARATED ON THE NR 1 MAIN TIRE.