What was found
THE RUDDER TRIM TAB WASN’T OPERATING & STUCK IN FULL RT POSITION. UPON ARRIVING, PROCEEDED TO PERFORM A VISUAL INSPECTION OF RUDDER & TRIM SYS, NO VISUAL DAMAGE WAS FOUND AT THAT TIME. GAINED ACCESS TO THE RUDDER TRIM TAB RELAYS, SWAPPED THE LT & RT RELAYS FOR TROUBLESHOOTING PURPOSE. FOUND THE RT RELAY WAS INOPERATIVE. REMOVED RT RUDDER TRIM TAB RELAY & INSTALLED NEW RELAY PN 974-20-01-901 IAW AMM 27-21-00, 27-20-00 & 27-00-00. PERFORMED OPERATIONAL CHECK & VISUAL INSPECTION FOR FUNCTION OF RUDDER TRIM TAB SYS. CHECKED OKAY. LOG BOOK ENTRY MADE & CONTACTED MX CONTROL & RETURNED ACFT TO SERVICE.