As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERCOSTAL AT 20R IS CORRODED BETWEEN FS 349.00 AND 364.0 REMOVED INTERCOSTAL ON STRINGER 20R BETWEEN FS 349 AND 364 IAW CRJ 900 SRM 51-42-06-001-001-A01 AND 51-42-21-001-001-A01 INSTALLED NEW INTERCOSTAL ON STGR 20R BETWEEN FS 349 - 364 IAW CRJ 900 SRM 51-42-21-001-001-A01