As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT, FLIGHT CREW NOTICED LT OTBD TIRE LOOKED LOW. MX DISCOVERED TIRE ALMOST COMPLETELY DEFLATED BUT NOT BLOWN. WHEEL ASSYS ONLY HAD 9 CYCLES SINCE IT WAS O/H. REMOVED AND REPLACED WHEEL/TIRE ASSY. INSPECTED REMOVED WHEEL ASSY AND FOUND AIR LEAKING FROM RIM NEAR VALVE STEM LOCATION (BUT NOT FROM VALVE STEM). MX BELIEVES THAT LEAK IS COMING FROM THE WHEEL HALF SEALING O-RING.