What was found
UNABLE TO ADJUST RUDDER TRIM IN FLIGHT- AUTOPILOT ON OR OFF-NO D IFFERENCE GROUND TEST OF RUDDER TRIM SHOWS TRIM INTERMITTANTLY COMPLETELY INOP. FOLLOWED FIM 27-21 FAULT TREE 805, ELECTRICAL CHECKS AT TRIM ACT CANNON PLUG D1746 CHECK GOOD. FIM INDICATES TRIM ACTUATOR NEEDS REPLACEMENT. NEW ACTUATOR PLANSIDE. ADD EMP:U348947 REPLACED RUDDER TRIM ACTUATOR AND ACCOMPLISHED OPERATIONAL TEST REF AMM 27-21-06. ADD EMP:U118140 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1041696 SN OFF 1832 TRIM, ACTUATOR OFF 99-2721-9-0005 1832 ON 99-2721-9-0005 3183