As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) NOSE WHEEL TIRE DEFLATED. NO DAMAGE TO WHEEL RIM. NOSE WHEEL MUD GUARD MISSING. INVESTIGATION FOUND THE VALVE STEM SHEARED FROM THE TUBE. SUSPECT VALVE STEM FAILURE CAUSED BY FATIGUE AND AGING OF THE RUBBER AROUND THE VALVE BASE.