As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRESSURE FLOOR DOUBLER CORRODED AFT OF FS 439.00 RBL43. APPEARS TO BE 10F6 UNDOCUMENTED DOUBLERS INSTALLED ON PRESSURE FLOOR. REMOVED CORROSION IAW SRM 51-21-06. PERFORMED UT THICKNESS OF BLEND AREA IAW MAC NDT INSPECTION PROCEDURE UT-3, MINIMUM MATERIAL REMAINING IS .048". R & R DAMAGED DOUBLER IAW REO 601R-53-41-316.