As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ANNUAL INSPECTION, FOUND 20 STRESS CRACKS ON TOP OF BOTH WINGS ALONG BOTH LONGITUDINAL STRINGERS AFT OF MAIN SPAR. CRACKS RANGE FROM .250 INCH TO .750 INCH IN LENGTH, AND PROPOGATE ENTIRE LENGTH OF WINGS. SUSPECT CRACKS CAUSED BY OVER-STRESS OF AIRCRAFT DURING FLIGHT. REPAIR IS IN-WORK.