What was found
IN CLIMBOUT, CLEAN CONFIGURATION ABOVE 250 KTS VIOLENT SHUDDER WITH STALL WARNING AND STICK SHAKER. A/C WT 335 ALT FL 200, ENGINE PARAMETERS AND FLT CONTROL INDICATION NORMAL. SYS PARAMETERS NORMAL. AIRCRAFT RETURNED TO AIRPORT. PERFORM OP'S CK OF AOA SENSOR'S, NO FAULT FOUND. INSP AOA SENSORS, NO FAULT FOUND. RAN ENGINES AT PART PWR, NO VIBRATIONS NOTED. INSP ENGINE FAN BLADES, NO FAULT FOUND. CHECKED FLAP, SLAT AND FLT CONTROL MOVEMENT AND INSP FLAP, SLATS, AND FLT CONTROLS, NO DEFECTS NOTED ALL IAW 27-10-00, 27-20-00 AND 27-50-00. AIRCRAFT RETURNED TO SERVICE. TEST FLT PERFORMED AND OPERATED SATISFACTORY.