As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PAX DOOR INTERCOSTAL (PN: 601R318088-3) INSIDE THE AFT SIDE OF THE DECOMPRESSION PANEL IS CORRODED. LOCATED, DRILLED, AND INSTALLED NEW SERVICEABLE FORMER P/N 601R318088-3 IAW CRJ900 SRM 51-40-11-001-001-A01, 51-42-06-001-001-A01, AND 51-42-21-001-001-A01.