As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERCOSTAL THAT SITS ON TOP OF STR 20L HAS CORROSION BETWEEN FRAME 333.00 AND 349.00 IN THE FWD ELECTRONIC EQUIPMENT BAY. REPLACED INTERCOSTAL ON STR 20L BETWEEN FRAME 333.00 AND 349.00 IAW SRM 51-42-06, 51-42-21. REPAIRED STR 20L IAW EA AWAC-CRJ253-00442, REV-IR DATED 07/13/2016.