What was found
ON TAKEOFF ROLL CAPTAIN`S PFD AIRSPEED INDICATION 50 KTS & STAGNANT. STANDBY AIRSPEEDS BOTH INDICATING 95 KTS AT REJECT. FIRST OFFICER`S PFD AIRSPEED MATCHED STANDBY A/S. PERFORMED INSPECTION & CHECK OF CAPTAIN`S PITOT PROBE IAW MM 34-11-15-06. VISUALLY COULD NOT SEE AN OBSTRUCTION, BLEW PITOT PROBE DRY NITROGEN & REINSPECTED PITOT PROBE. FOUND SEVERAL PIECES OF MUDDY DEBRIS, BLEW LINES AGAIN TILL ALL CLEAR. PERFORMED PITOT TEST ON CAPTAIN`S & FIRST OFFICER`S PITOT PROBES IAW MM 34-10-00-05. NO DEFECTS NOTED.