What was found
(CAN) DURING COMPLIANCE WITH RAYTHEON S/B 55-2365 REV.2 ISS. OCT 2005 MAINTENANCE FOUND THE RUDDER TAB DISBONDED ON LOWER END. MAINTENANCE REPLACED THE RUDDER TAB AND RELEASED THE AIRCRAFT. RESEARCH ON THIS AIRCRAFT DISCOVERED THAT RAYTHEON S/B 2 365R1 (A/D 92-07-05) HAD BEEN COMPLIED WITH IN 1992. THIS AREA IS CALLED UP IN THE MAINTENANCE SCHEDULE TO BE INSPECTED EVERY PHASE 2 AND 4. SUGGEST ALL OPERATORS INSPECT THIS AREA CLOSELY FOR DISBONDING NOT JUST THE DRAIN HOLE ITSELF.