What was found
ON CLIMB 160 KIAS AUTO PILOT ENGAGED NOTED FORE AND AFT MOVEMENT OF YOKE ACCOMPANIED BY PITCH MOVEMENT AND VIBRATION IN CONTROLS AND IN AIRCRAFT. REMOVED AND REPLACED ELEVATOR SERVO IAW SAAB AMM 22-10-26, PERFORMED SAAB VIBRATION WORK CARD, REMOVED AND REPLACED ELEVATOR SERVO IAW SAAB 22-10-26. REMOVED AND REPLACED SERVO MOUNT ELEVATOR REMOVED AND REPLACED LEFT AND RIGHT AILERON CONTROLLER MECHANISM BEARING AND CAM ASSY AMM 27-11-45, RIGGED AILERON CABLE SYS AMM 27-11-00. FCF PASSED AIRCRAFT RETURN TO SERVICE.