What was found
ABORTED TAKEOFF. FLT 8777 GEG TO YKM. DURING THE TAKEOFF ROLL THE COPILOT`S AIRSPEED SHOWED NO INDICATIONS. TAKEOFF WAS ABORTED AND THE ACFT TAXIED BACK TO THE RAMP SAFELY. MAINTENANCE FOUND THE PITOT STATIC TUBE HEAD TO BE OBSTRUCTED WITH A SMALL PIECE OF MATERIAL FROM THE PITOT STATIC TUBE COVER. REMOVED OBSTRUCTION FROM THE END OF CO-PILOT`S PITOT STATIC TUBE HEAD AND A PITOT STATIC SYSTEM CHECK WAS PERFORMED. NOTE: THE PITOT STATIC TUBE COVER WAS ALSO REPLACED WITH A NEW COVER AND PLACED WITH THE ACFT`S OTHER PARKING COVERS. (S)