What was found
ON FLIGHT 2765 THE CREW REPORTED THE TAKEOFF WAS PERFORMED WITH THE AUXILIARY POWER UNIT ON. AFTER TAKEOFF THE AUXILIARY POWER UNIT WAS SHUT DOWN AND GEN 3 WENT OFF BUS GEN 3 RESET THEN WENT OFF BUSS AGAIN. THE CREW ELECTED TO RETURN TO DFW. THE NR 3 MAIN TIRE WAS MISSING ABOUT HALF OF TREAD DAMAGE MAY HAVE OCCURED ON LANDING AT DFW. THE NR 3 RIGHT INBOARD FLAP WAS DAMAGED FROM TREAD SEPERATION FROM NR 3 TIRE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE NR 3 GEN IAW EMB 145 AMM 24-31-01 AND WC 24-800-00. REMOVED AND REPLACED THE RIGHT INBOARD FLAP IAW AE WC 27-400-01 THE OPERATIONAL CHECK WAS GOOD AT THIS TIME. REMOVED AND REPLACED THE NR 3 TIRE IAW EMB 145 W/C 32-700-1. THE AIRCRAFT WAS RETURNED TO SERVICE.