As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION, LEFT DELTA FIN WAS FOUND TO HAVE EXCESSIVE MOVEMENT ON THE LOWER SKIN. REMOVED FIN AND FOUND CRACK IN LOWER FIN ATTACHMENT, ADJACENT TO THE SCREW HOLES, UNDER FIN TO FUSELAGE ATTACH ANGLE. CRACK WAS THIRTEEN INCHES LONG. LOWER SKIN WAS ALSO DELAMINATED. THE INBOARD RIB HAD A CRACK SIX INCHES LONG JUST AFT OF THE LEADING EDGE. (M)