What was found
DURING TAKE-OFF ROLL, THE FIRST OFFICER’S AIRSPEED INDICATOR READ 80 KNOTS AND THE CAPTAIN’S INDICATOR INDICATED ZERO KNOTS. ABORTED TAKE-OFF, CONTACTED ATC TO ADVISE THEM OF AN AIRSPEED INDICATION PROBLEM AND RETURNED TO RAMP WITH NO FURTHER INCIDENT. INSPECTED CAPTAINS PITOT PROBE AND FOUND DEBRIS LODGED IN PITOT TUBE. CLEAN DEBRIS AND BACK FLUSH PITOT LINE AND PERFORMED LEAK AND PITOT STATIC CHECK IAW MM 34-11-00. SYSTEM OPS CHECKS GOOD, AND AIRCRAFT RETURNED TO SERVICE.