As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUPPORT INTERCOSTAL LEFT OF STGR 27 IS CORRODED BETWEEN FS 349.00 AND 364.00 LOCATED AND DRILLED NEW INTERCOSTAL PN SH670-32075-3S I.A.W. CRJ900 SRM 51-40-11-001-001-A01. INSTALLED NEW SERVICEABLE INTERCOSTAL P/N SH670-32075-3S JUST LEFT OF STIR 27 BETWEEN FS 349 AND FS 364.