What was found
CORROSION FOUND ON R/H TAIL STINGER, STARTED REMOVING CORROSION FROM THE TAILCONE STINGER RH FWD SKIN AND NOTED SEVERE LEVEL 2 CORROSION THAT EXTENDS THROUGH THE ENTIRE THICKNESS OF THE SKIN. REMOVED AND REPLACED L/H AND R/H STRINGERS IN THE TAILCONE STINGER , REMOVED AND REPLACED L/H AND R/H RUDDER FAIRING ATTACH ANGLES REMOVED AND REPLACED L/H AND R/H TAIL STINGER FWD SKINS, CESSNA 680 SRM 51-40-03, 51-40-08, 55-01-00.