As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOWER WING PLANK LANDING FOR PANEL 550BB HAS MULTIPLE INDICATIONS AROUND ENTIRE CIRCUMFERANCE APPROX .250" X 70 PERCENT FSH. FAILED NDT INSPECTION. PERFORMED REPAIR TO LOWER WING PLANK LANDING FOR PANEL 550BB IAW REO 601R-57-21-030, REV K, STEPS 1 THROUGH 12 AND COMPLIED WITH EC/TC EO 600-57-81. C/W IAW REO 601R-57-21-030, REV.K.