What was found
PILOT REPORTED ON HIS FIRST LEG, NO ISSUES FOUND. SECOND LEG PILOT NOTED SOME SUDDEN/MINOR CROSS WIND CHANGES DURING FLIGHT. BUT UNEVENTFUL TO DESTINATION, UPON LANDING ON WALKAROUND PILOT FOUND RIGHT HORIZONTAL END PLATE DEPARTED. MAINTENANCE INSPECTION OF AIRCRAFT FOUND RT ENDPLATE UPPER COUNTERSUNK SCREWS SHEARED OFF, LOWER ANGLE ATTACHMENT PLATE BROKEN CLEAN. TRAILING EDGE CLOSURE HAS DAMAGE TO OUTBOARD RIB STRUCTURE ANGLE (REPAIRABLE POSSIBLY) DAMAGE LIMITED TO MISSING END PLATE, LOWER ATTACHMENT ANGLE AND TRIALING EDGE.