As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON COUTERSINKS AT FUEL TANK ACCESS NR 520JB, SM. CORROSION OF COUNTERSINK WAS REMOVED IAW SRM 51-10-04. REWORKED AREAS WERE MEASURED AND MAX DIAMETER ALLOWABLE IS 0.532" AND 5 ADJACENT HOLES OUT OF LIMITS WERE FOUND. MAX DIAMETER MEASURED IS 0.557", IT IS OUT OF LIMITS IAW SRM 57-10-01. ACCESS PLATE WAS REPLACED AND PN VERIFIED IAW AIPC 57-27-01.