As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERCOSTAL FROM FS394 TO FS409 JUST LEFT OF STRINGER 27 HAS CORROSION LOCATED AND DRILLED NEW SERVICEABLE INTERCOSTAL P/N SH670-32075-4S JUST LEFT OF STRINGER 27 BETWEEN FS 394 AND FS 409 IAW CRJ 900 SRM 51-40-11-001-001-A01 AND INSTALLED IAW CRJ 900 SRM 51-42-06-001-001-A01 AND SRM 51-42-21-001-001-A0