What was found
STGR 21R IS CORRODED BETWEEN F.S. 409 TO F.S. 421. REMOVED STRINGER 21R P/N SH670-31385-1 FROM F.S 394 TO F.S 477. LOCATED AND DRILLED NEW STGR 21R (PN: SH670-31385-1) IAW CRJ 900 SRM 51-40-11-001-001-A01. INSTALLED NEW SERVICEABLE STRINGER 21R PN ( SH670-31385-1) IAW CRJ 900 SRM 51-42-06-001-001-A01 INSTALLED SKIN RIVETS FROM STRINGER 21R FROM FS 394 TO FS 477 IAW CRJ900 SRM 51-42-06-001-001-A01.APPLIED FINISH TO STRINGER 21R FROM FS 394 TO FS 477 IAW CRJ 900 SRM 51-25-21-001-001-A01