As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A ROUTINE INSPECTION, THE LEFT WING SKIN AROUND FUEL TANK VENT PANEL WAS FOUND CRACKED. CRACK WAS APPROX 1.5 INCHES AND EXTENDED FWD OF THE PANEL. THE PANEL AND DOUBLER WERE NOT DAMAGED. THIS AREA HAS A HISTORY OF SEMI-FREQUENT CRACKING ON THIS AIRCRAFT TYPE AND IS ADDRESSED IN SB 1287.