What was found
BETWEEN FLIGHTS, THE ACFT NOSE TIRE WAS FLAT. THE WHEEL ASSEMBLY WAS REPLACED WITH A BUILT UP WHEEL ASSY. THE FLAT WHEEL ASSY WAS DISASSEMBLED AND TUBE INSPECTED; THIS REVEALED A SMALL HOLE IN THE TUBE, ABOUT .01" LONG. CLOSER INSPECTION SHOWS A VERY TINY BUBBLE IN THE TUBE MATERIAL, LIKE A BUBBLE IN SODA. THIS TUBE WAS INSTALLED ON THE ACFT AS PART OF A BUILT-UP WHEEL ASSY ON 9/26/2013 AND HAD ACCRUED 194.2 HOURS TIS. THE TIRE WAS SERVICED ONLY WITH DRY NITROGEN.