As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON SETTLEMENT AREA AND COUNTERSINK AREA OF WING ACCESS PLATE NR 520MB. SM, CARD 40, ZONE 500. CORROSION SETTLEMENT AND COUNTERSINK AREA OF FUEL ACCESS PLATE 520 MB WERE REMOVED IAW SRM 57-10-01. COUNTERSINK AND SETTLEMENT AREA WERE MEASURED AND COUNTERSINK MAX DIAMETER IS 0.532 IN AND MAX DIAMETER MEASSURE IS 0.538 IN THEREFORE IS OUT LIMITS AND FUEL ACCESS PLATE WAS REPAIRED IAW SRM 57-10-01.