As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERCOSTAL IN MAIN AVIONICS BAY BETWEEN FS 349.00 AND FS 364.00, AND BETWEEN STR 26L AND STR 27 IS CORRODED. LOCATED, DRILLED AND INSTALLED NEW SERVICEABLE INTERCOSTAL PT #SH670-32075-3 BETWEEN FS 349.00 - 364 IAW CRJ 900 SRM 51-40-11-001-001-A01, 51-42-06-001-001-A01 AND 51-42-21-001-001-A01.