As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE AIRCRAFT WAS UNDERGOING INSPECTION OF THE WING SPAR IAW SB 978A. DAMAGE TO THE RIGHT WING LOWER AFT SPAR DOUBLER WAS NOTED DURING VISUAL INSPECTION. THE DAMAGE IS A RESULT OF IMPROPER WASHERS INSTALLED WHEN WINGS WERE LAST REINSTALLED ON AIRCRAFT. THE CORRECT WASHERS HAVE A BEVELED EDGE THAT PREVENTS DAMAGE TO ADJACENT BEND RADIUS; THESE WASHERS ARE SPECIFIED IN PIPER MM 57-40-00 PG 2 FIG 1.