What was found
FS 280 CROSSBEAM HAS CORROSION ON UPPER FLANGE. REPLACE BEAM PER CUSTOMER. REMOVED ALL REQUIRED FASTENERS ON LEFT FS 280. CROSSBEAM, REMOVED LBL 9 CLIP, REMOVED LEFT FS 280 CROSSBEAM. ALL WORK DONE IAW CRJ SRM 51-42-06, 51-42-13, 51-42-21. LOCATED HOLES ON SERVICEABLE BEAM P/N CC670-34175-7 IAW CRJ SRM 51-40-11 MH715. OK TO INSTALL LEFT 280 CROSSBEAM. OK TO INSTALL LBL 9 CLIP. INSTALLED LBL 9 WITH HI-LOKS, INSTALLED LEFT FS 280 CROSSBEAM WET W/ HI-LOKS, SOLID FASTENERS, CHERRY RIVETS IAW CRJ SRM 51-42-06, 51-42-13, 51-42-21 MH715, REQUIRES 1 EA. CHERRY FASTENERS 2ND IN FROM O/B REQUIRES CHANGING. REMOVED CHERRY FASTENER 2ND IN FROM O/B REQUIRES CHANGING. REMOVED CHERRY FASTENER & INSTALLED HI-LOK IAW