What was found
IAS ALERT DISPLAYED AFTER 250 KNOTS. CAPTAINS AIRSPEED DECREASING WHILE FIRST OFFICERS AIRSPEED WAS INCREASING, THEN LOSS ROLL BARS BOTH SIDES. THEN LOSS OF BOTH CAPTAIN & FIRST OFFICERS PITCH BARS. SELECTED AIRSPEED ALT LEVEL II & ELEVATOR FEEL LEVEL II. PERFORMED PITOT TEST ON BOTH 1 & 2 CADC & FOUND 1 CMDC WITH 10 KNOTS DIFFERENCE BETWEEN COCKPIT INDICATION & PITOT TESTER. FOUND DEBRIS IN CAPTAIN'S PITOT LINE. CLEARED DEBRIS & REPLACED CAPTAINS CADC. PERFORMED PITOT & STATIC TEST ALL NORMAL.