What was found
ON DEPARTURE AT APPROX 1000 FT AGL CALLED FOR QUIET EPP, FLAPS 5 DEGREES, STICK SHAKER INITIATED AT FLAPS 15 DEGREES, SPEED 160 KIAS, APPEARED TO ACTIVATE 15 KTS ABOVE MMS DURING CLIMBOUT. VIBRATED ONCE AT 8 - 10 KTS ABOVE BUG SPEED AT FLAPS 30 DEGREES, GEAR DOWN THEN WORKED WELL AT BUG 5 - 10 KTS. REMOVED & REPLACED AOA SENSOR IAW MM 34-18-051. OP'S CHECK GOOD IAW MM 34-18-001.