What was found
DURING HIGH SPEED DECENT FROM FL 410 TO FL 240 WITH FGC B IN CONTROL ON AUTOPILOT, TAIL SLIDE OUT, THEN RECOVERED. THIS WENT ON AT LEAST 20 TIMES. COMPLETED IMT LOWER RUDDER ACTUATOR TEST, FOUND CURRENT OF BOTH ACTUATORS HIGH, OVER 1100 MIL/AMP- HAVE 2 ACTUATORS ON ORDER FROM NETJET. OPENED PANELS ON VERTICAL FIN, REMOVED OLD ACTUATORS AND INSTALLED 2 REPAIRED YAW DAMPER ACTUATORS. OPS CHECK OF ACTUATOR CURRENT SHOWED NORMAL. WORK DONE PER 750 M.M. CHAP 27-24-00. CLOSED PANELS.