As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT WING LOWER WING PLANK ACCESS HOLE 640BB, WS 54.897, HAS FRETTING CORROSION AT INBD & OTBD ENDS. INBD CORROSION MEASURES APPROX 9" LONG X 0.15" WIDE X 0.002" DEEP. OTBD CORROSION MEASURES APPROX 11.3" LONG X 0.20" WIDE X 0.003" DEEP. REPAIRED 640BB CUT OUT IAW GREO 601R-57-21-030 REV L DATED 02 05 14. THIS IS A MAJOR REPAIR. REF TO ATTACHED REO FOR WORK PERFORMED.