What was found
ON TAKEOFF ROLL AT 65 KTS, MASTER CAUTION "YD OFF LWR" EICAS MESSAGE. ABORTED T/O. INSPECTED PITOT TUBES; FOUND RT PITOT TUBE PLUGGED FROM A MUD DOBBER. REMOVED RT PITOT TUBE, CLEANED DEBRIS, REINSTALLED AND COMPLETED PITOT/STATIC SYS LEAK CHECK IAW FAR 91.411 AND TRANSPONDER INTEGRATION CHECK IAW FAR 43, APPEND E, PARA C ON 10-28-08. PITOT TUBE REMOVED AND INSTALLED IAW MM 34-11-01. SYS CHECK NORMAL.