What was found
ON TAKEOFF ROLL, F/O HAD NO AIRSPEED INDICATION, PERFORMED REJECT (70KTS). PERFORMED ALL OTHER PARAMETERS THAT COME FROM ADC ARE NORMAL. THE ON ISSUE IS THE SEED. PER FLIGHT CREW THE SPEED STOP AND THERE WAS DIFFERENCE FROM THE CAPTAIN'S AND THE FO'S. DURING FLIGHT FROM OAK TO BUR, FLIGHT CREW DID MENTIONED THAT THEY SWITCHED OVER FROM NR 2 SGU TO NR 3 AND THE RESULTS WERE NO JOY. BAGGED FO'S PITOT PROBE AND BACK PRESSURED PITOT LINE, NO DEBRIS FOUND, RECONNECTED ALL LINES. REMOVED AND REPLACED NR 2 AIR DATA COMPUTER. PERFORMED FO'S PITOT LEAK CHECK WITH BARFIELD TESTER, LEAK CHECKS NORMAL. SYSTEM OPS CHECKS NORMAL PER MM 34-11-34-4.