What was found
ON TAKEOFF ROLL, CAPT/FO AIRSPEED DIFFERENCE OF 40 KNOTS (120/80) REJECTED TAKEOFF. PERFORMED ADS SYSTEM CHECK IAW TSM 34-10-00. NO FAULTS NOTED. NO FAULTS ON ADC NR 1 OR NR 2. PERFORMED VISUAL INSPECTION OF ALL PITOT PROBES, NO BLOCKAGE FOUND. PERFORMED PRESSURE BLOW OUT ON BOTH CAPT AND F/O PITOT LINE FOR OBSTRUCTION. NONE FOUND. PERFORMED PITOT STATIC/TEST TO VERIFY SPEEDS WITH DIGITAL BARFIELD BOX IAW MM 34-10-00-5 02. ALL INDICATION CHECK WITH BOX AND NO SPLIT FOUND. CHANGED NR 2 ADC AS PRECAUTIONARY IAW 34-11-34-4. AIRCRAFT RELEASED FOR SERVICE.