What was found
CORROSION ON COUNTERSINKS AT FUEL TANK ACCESS NR 620JB, SM. CORROSION WAS REMOVED, REWORKED AREA WERE MEASURED. IT IS OUT OF LIMITS IAW SRM 51-10-01. FUEL ACCESS WAS REPLACED AND PN VERIFIED IAW AIPC 57-23-01-01 AND MUST BE INSTALLED WITH CARD 2040-0012, ZONE 620. JOB 001-0281, FOUND 13 ADJACENT HOLES, MAX DIAM ALLOWABLE IS .532 IN AND MAXIMUM MEASURED IS .577".