What was found
(CAN) CREW NOTED BEFORE TAKEOFF A BURNING SMELL IN THE COCKPIT PRIOR TO TAKEOFF. NO SYSTEM FAULTS WERE NOTED OR BREAKERS POPPED AND THE SMELL WENT AWAY, SO THE FLIGHT CONTINUED IT`S LAST LEG. NO FAULTS NOTED IN FLIGHT. IT WAS LATER DISCOVERED A SPEED SWITCH HAD FAILED. THIS WAS DETERMINED TO BE THE CAUSE OF THE ELECTRICAL SMELL. THIS UNIT HAD 77.5 HOURS TSO HOURS AND IS ONE OF A NUMBER OF FAILED SWITCHES FROM THIS VENDOR. (TC NR 20060901006)