What was found
CAPTAIN'S AIRSPEED INDICATION WAS AT 40 KNOTS WHEN THE FIRST OFFICER'S WAS 80 KNOTS. ABORTED TAKEOFF AT 105 KNOTS AND TAXIED TO GATE. CLEARED CAPTAIN'S PITOT LINE. REPLACED NR 1 PITOT PROBE, LEFT AIR DATA MODULE, AND NR 1 AIR DATA INERTIAL REFERENCE UNIT. LEAK AND FUNCTIONAL TEST OF ALTITUDE, AIRSPEED, AND AIR DATA SYSTEM CHECKED OK. AIRCRAFT RETURNED TO SERVICE.