What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS AT 40 FEET DURING LANDING, RUDDER PEDALS HAD FLUTTER UNTIL MAIN GEAR TOUCH DOWN. FLAPS 3, AP OFF, GW 105,000, NO AIRFRAME VIBRATIONS NOTED. MAINTENANCE REMOVED AND REPLACED THE RUDDER TRIM ACTUATOR IAW AMM. MAINTENANCE ALSO REMOVED AND REPLACED THE CABLE TENSION REGULATOR ASSEMBLY AND RUDDER CONTROL CENTERING ROD. RIG CHECKED GOOD IAW AMM 27-21-15. (SEE SDR # AALA201906209001)