As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
F.S. 501 TO F.S. 517 STGR 20 R IS CORRODED. UPON FURTHER INVESTIGATION NO CORROSION WAS FOUND ON STGR20R. CORROSION WAS FOUND ON STGR21R BETWEEN FS501 AND FS517. REMOVED AND REPLACED STGR 21R SEGMENT BETWEEN FS501 AND FS549 IAW CRJ 900 SRM 53-00-03-201-001-A02