As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SERVICE DOOR SILL, MOUNTING ANGLE PN: SH670-31996-3 IS CORRODED FS 319-349. REMOVED CORRODED ANGLE. RECEIVED, LOCATED AND DRILLED NEW SERVICEABLE SERVICE DOOR SILL, MOUNTING ANGLE PN: SH670-31996-3 IAW CRJ-900 SRM 51-40-11-001-001-A01.