What was found
DURING TAKEOFF, ENROUTE, CREW NOTIFIED THAT LANDING GEAR WHEEL AND TIRE WAS SEEN DEPARTING AIRCRAFT. CREW ELECTED TO CONTINUE FOR MAINTENANCE. MAINT CREW DISCOVERED NR 4 WHEEL BROKEN WITH PART OF THE WHEEL MISSING. TIRE WAS MISSING. FOUND THE FAILURE OF THE OUTER WHEEL BEARING EVIDENCED BY BURN MARKS AND SEIZED ROLLERS. NR 4 TIRE AND WHEEL ASSY WERE REMOVED AND AXLE WAS INSPECTED BOTH VISUALLY AND WITH DYE PENETRANT. THERE WAS NO DAMAGE TO AXLE. SERVICEABLE TIRE AND WHEEL ASSY WAS INSTALLED AND AC RETURNED TO SERVICE. (K)