What was found
RUDDER TRIM SWITCH INOPERATIVE WHEN ATTEMPTING TO MOVE RUDDER TO THE LEFT . TRIM SWITCH DRIVES RUDDER TO THE RIGHT NORMALLY. WHEN ATTEMPTING TO RECENTER RUDDER THERE IS NO MOVEMENT ON PFCS. REMOVED FROM SERVICE. R & R AILERON / RUDDER TRIM CONTROL PANEL IAW AMM TASK 27-13-16-000-801 AND 27-22-11-000-801 FROM REMOVED CONTROL PANEL AND INSTALLED RUDDER TRIM IND AND AILERON TRIM IND INTO NEW CONTROL PANEL IAW AMM TASK 27-22-11-400-801. OPS TEST OF RUDDER TRIM SYS GOOD IAW 27-22-00-710-801 AND OPS TEST OF AILERON TRIM SYSTEM GOOD IAW 27-13-00-710-802. A/C OK FOR SERVICE. AIRCRAFT RETURNED TO SERVICE.