As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ASH FLT 7073 SAT-DEN. LT NLG TIRE TREAD SEPARATION ON TAKEOFF. AN EMERGENCY WAS DECLARED AND THE FLIGHT CONTINUED TO DEN WHERE AIRCRAFT LANDED WITHOUT INCIDENT. MX FOUND 6 INCHES OF TREAD SEPARATION, PERFORMED TIRE BURST INSPECTION AND CHANGED NLG TIRES.