What was found
INITIAL INSPECTION. CORROSION ON FLOOR SEAT RAILS LBL9, LBL27, RBL9 BTW FS 364-485. (SM)(CPAX)(TCI 53-20-243). SUMMARY: OF NRC: 00163, NEW SECTION OF SEAT RAILS LBL9, LBL27, RBL9 BTW FS 364-485 WERE REPLACED PER CRJ-900 SRM 51-41-02-001-001-A01 AND AMM 53-00-49-400-801 (CONFIG 12).