As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT WET AREA INTERCOSTAL AT RBL 44 CORRODED BETWEEN STA 947-967. GROUNDED - YES. BLENDED CORROSION ON INTERCOSTAL REMAINING MATERIAL FOUND OUT OF LIMITS IAW B737-800 SRM 53-10-51-1A-1. REMOVED & REPLACED INTERCOSTAL IAW B737-800 SRM 51-40-02-0G-0.W= 1." O= .150" R= .125" L= 2." D= .025".