As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AS ACFT TAXIED OUT FOR A TRAINING FLIGHT THE RT TIRE WENT FLAT. UPON REMOVAL OF TIRE AND TUBE IT WAS FOUND THAT THE TUBE HAD A .5" LONG SPLIT IN IT. NO FOREIGN OBJECTS FOUND IN TIRE. THIS HAS BEEN AN ONGOING PROBLEM IN THE LAST FEW YEARS AS THE TUBES SUDDENLY LEAK FOR NO APPARENT REASON. THE TUBE WAS IN SERVICE FOR JUST OVER A YEAR.