As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION FOUND ON BOTH UPPER AND LOWER SURFACES OF INTERCOSTAL LOCATED APPROX. 4 IN. FWD. OF R2 DOOR APPROX. STA. 950-956, RBL46. AREAS MARKED IN RED. GROUNDED - YES. CORROSION FOUND TO BE OUT OF LIMITS REF B737-800 SRM 53-70-51. ORIGINAL IS .205, REMAINING IS .180, .025 WAS REMOVED. REPLACED INTERCOSTALREF BAC DWG 147A5650 SH 70 & 71 REV "A" PO# 999439.9.