What was found
INTERCOSTAL AT STGR 21L IS CORRODED BETWEEN FS310 AND FS349. TCI: 53-20-304 - REMOVED AND REPLACED INTERCOSTAL IAW CRJ900 SRM 51-42-06-001-001-A01, 51-40-11-001-001-A01, 53-21-23-101-001-A02, 51-21-06-001-001-A01, 51-21-11-001-001-A01 INSTALLED AVIONICS SHELF AT F.S. 310 TO F.S. 349 IAW CRJ 900 SRM 51-42-06-001-001-A01