As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE MAIN CABIN INTERCOSTAL AT FRAME 13 LBL 35 IS CORRODED ON THE UPPER SURFACE. REMOVED CORROSION IAW SRM 51-73-10 PG 209 ITEM 5. ORIGINAL MATERIAL THICKNESS IS 0.079 IAW SRM 53-12-15 CONFIG 2 PG 4-2 (B). REMAINING THICKNESS IS 0.050. FOUND TO BE OUT LF LIMITS IAW SRM 53-12-11 PGS 107-108. REMOVED SUPPORT IAW SRM 51-40-21 PG 7. LOCATED, DRILLED & DEBURRED THE NEW SUPPORT IAW DWG A53612214. INSTALLED IAW SRM 51-40-21 PGS 7 & 24.