As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE ACFT CONDUCTED A BACK TRACK TAXI OUT TO THE RUNWAY, TURNED VERY SHARP USING BRAKES TO PIVOT THE WHEEL AND SHEARED THE VALVE STEM ON THE TUBE CAUSING THE TIRE TO DEFLATE AND RESULTING IN THE ACFT TO BE STUCK ON THE RUNWAY FOR APPROXIMATELY 30 MINUTES WHILE MAINTENANCE CHANGED THE WHEEL ASSY. NO OTHER FLIGHTS WHERE DIVERTED DURING THIS TIME NOR WAS AIRPORT SERVICE INTERRUPTED.