What was found
STICK SHAKER ACTIVATED AT APPROXIMATELY 100FT CONTINUOUSLY UNTIL TOUCHDOWN. CREW DECLARED EMERGENCY AND RETURNED TO POINT OF DEPARTURE AT YIP. AIRCRAFT LANDED WITHOUT FURTHER INCIDENT.MAINTENANCE AT YIP REMOVED AND REPLACE THE LT WING, LIFT, TRANSDUCER AND RT SIGNAL SUMMING UNIT. MAINT PERFORMED STALL WARNING TEST ON THE LT HAND AND RT HAND SYSTEM. ALL OPERATIONS CHECKED NORMAL, WITH NO DEFECTS NOTED. AC WAS RETURNED TO SERVICE.