As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING AN INSP, THE UPPER WING SKIN WAS FOUND CRACKED. THE CRACK WAS LOCATED AT THE AFT ATTACHMENT POINT OF THE MAIN FUEL TIP TANK. THE CRACK WAS 3/4 OF AN INCH IN LENGTH JUST FWD OF THE AFT WING SPAR. 2 RIVETS THAT GO THROUGH THE OTBD AILERON ATTACH BRACKET AND AFT WING SPAR WERE ALSO FOUND SHEARED OFF. THIS PROBLEM WAS FOUND ON BOTH LT AND RT WINGS.