As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER FLIGHT 17 TAKEOFF AT JFK, OPERATIONS AT JFK ADVISED DISPATCH THAT TIRE PIECES WERE FOUND ON THE RUNWAY. FLIGHT DIVERTED TO ANC. MAINTENANCE INSPECTED AIRCRAFT AND FOUND THE NR 8 TIRE RECAP MISSING AND FLAT. REPLACED THE NR 7 AND NR 8 MAIN TIRE AND WHEEL ASSEMBLIES. PERFORMED CHECK AND AIRCRAFT RETURNED TO SERVICE.