What was found
ON DECENT, MAX SPEED AUTOPILOT EICAS LT ILLUMINATED. AS WENT ABOUT 2 KNOTS HIGH INTO RED-OVERSPEED WARNING TRIED TO SOUND BUT WAS MUFFLED SOUNDING. AN ELECTRICAL SMELL ON LEFT SIDE OF COCKPIT WAS NOTICED SUSPECT OVERSPEED SHAKER FAILURE. T/S AP MTC MSG PER FIM SUGGESTED SEQUENCE ERROR NO ACTION NEEDED FOR FAULT. ALSO PERFORMED WEU SYSTEM TEST ON MAT TO VERIFY SPEAKER OPN. TEST PASSED PERFORMED STALL WARNING TEST OF STICK SHAKER MOTORS ALL OK. NO ELECTRIC OR BURNING SMELL NOTED OK FOR SERVICE