As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ANNUAL INSPECTION NOTED WING ROOTS, BOTH LT AND RT WRINKLED. AREA OF DEFECT IS FORWARD OF MAIN CARRY THRU SPAR. A SERIES OF 3 WAVES EXTENDING APPROXIMATELY 6-8 INCHES LONG. PROBABLE CAUSE: SEVERE TURBULENCE OR OVER CONTROL OF AIRCRAFT EXCEEDING (G) LIMITATIONS. WING REMOVED AND REPLACED. (K)