As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A C-CHECK IN BNA, THE CENTER BELLY SKIN BETWEEN FR 23D AND 24 WAS FOUND TO BE CORRODED BEYOND LIMITS. MAINTENANCE REPAIRED THE CORRODED CENTER BELLY SKIN BETWEEN FR 23D AND 24 BY FABRICATING AND INSTALLING A DOUBLER IAW SRM 51-21-42 AND SRM 53-00-00. (M)