As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
F.S. 333 CIRCUMFERENTIAL JOINT IS CORRODED BETWEEN STGR 26L AND STGR 27. INSTALLED NEW SERVICEABLE WEB FLOOR PROTECTOR ANGLES 2EA (PN SH670-32040-4S) AND 1EA (PN SH670-32040-3S) IAW CRJ900 SRM 51-42-06-001-001-A01 AND SRM 51-42-21-001-001-A01.