As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LT WING UPPER SKIN WAS FOUND WITH A 1.5 INCH CRACK EXTENDING FWD FROM THE AFT EDGE OF THE SKIN AT THE REAR SPAR AT WBL 170. THE CRACK WAS REMOVED WITHA 2 X 1 INCHES CUTOUT IN THE SKIN AND REPAIRED WITH 2 EXTERNAL ALUMINUM REPAIR DOUBLERS PER ER/A 384859-14, REV A.