What was found
(CAN) B737-200 PITOT TUBE ASSEMBLY FAILED BENCH CHECK WITH A PITOT LEAK IN EXCESS OF 350 KTS/MIN. THE LEAK WAS DETERMINED TO BE ORIGINATING WHERE THE PITOT TUBE AIRFRAME ATTACHMENT CONNECTS TO THE BASE OF THE PITOT TUBE ASSEMBLY. THE COMPONENT WAS A USED PART ACQUIRED FROM A DISTRIBUTOR, QWEST AIR PARTS INC, IN MEMPHIS TN. THE PITOT TUBE HAD BEEN BENCH CHECKED SERVICEABLE BY CROSS-CHECK AVIATION, FAA REPAIR STATION NR XK8R253Y LOCATED IN RENO, NEVADA.