As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING COMPLETION OF A CORROSION INSPECTION ON THE INTERNAL STRUCTURE OF THE WING A 28" CRACK OF THE LOWER WING SKIN WAS DISCOVERED. LOCATED APPROXIMATELY 8" INBD OF RT RIB BS 6. RUNNING FORE AND AFT. 2 PHOTOS ADDED TO THE SDR DEPICTING REPORTED CRACK.