What was found
DURING CHECK, UPPER YAW DAMPENER FAILED SYSTEM NR 2 TEST ON FLIGHT GUIDANCE MANAGEMENT ASSESSMENT PANEL. TROUBLESHOT FOUND B-CHANNEL YAW RATE GYRO INOP. ALSO, FOUND RESISTANCE OF A AND B ON LVDT IS LOWER THAN NORMAL. REMOVED AND REPLACED RATE GYRO. REMOVED AND REPLACED UPPER FORWARD RUDDER ACTUATOR IAW MM 27-30-00. MAINTENANCE ACCOMPLISHED BY LOCKHEED MARTIN AIRCRAFT CENTER, ZJ4R702M. REFERENCE: OPERATOR CONTROL NR 96037-1228-20.