As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING H-CHECK FOUND FLOOR STRUCTURE AT Y1959 FR17 CORRODED. REMOVED CORROSION AS PER SRM 51-74-00 MAT'L REMOVED 0.051" (L-2" W-1"). ORIGINAL THICKNESS MEASURED 0.080" AND FOUND OUT OF LIMIT AS PER SRM 53-11-14 FIG 101. REPAIR CARRIED OUT AS PER PRI 486602-14 REV 0.