What was found
LH FS 280 BULKHEAD LOWER WEB AT LBL11 WL 72 IS CORRODED. L/H FS 280 LOWER WEB IS CORRODED ON MORE THAN ONE ELEMENT, DEPTH OF CORROSION IS .017 AND IS OUT OF LIMITS IAW CRJ 900 SRM 53-11-10-201-003-A01.COMPLIED WITH STEPS 5.B.(1 THRU 3) REMOVE SPLICE PLATE, CUT LOWER WEB, AND DEBURR FOR L/H FS 280 LOWER WEB IAW CRJ 900 SRM 53-11-10-201-004-A01 FABRICATED, LOCATED AND DRILLED NEW L/H FS280 BULKHEAD LOWER WEB IAW CRJ 900 SRM 53-11-10-201-003-A01, 51-24-36-001-001-A01 AND 51-40-11-001-001-A01.PO # FOR METAL USED IS 5-5501COMPLIED WITH ALL REMAINING STEPS FOR L/H FS 280 LOWER WEB IAW CRJ 900 SRM 53-11-10-201-004-A01. REMOVED AND REPLACED INCORRECTLY SHOT RIVETS IN FS 280 L/H LOWER WEB REPAIR IAW CRJ 900 SRM 51-42-13-001-001-A01 LOCATED, DRILLED AND INSTALLED 1 EACH MISSING FASTENER IAW CRJ 900 SRM 51-40-11-001-001-A01 AND 51-42-13-001-001-A01 COMPLIED ALL REMAINING STEP IAW CRJ-900 SRM 53-11-10-201-004-A01.: COMPLIED IAW CRJ 900 SRM 53-11-10-201-004-A01, STEP 5.B (7), (PAINT ON FWD AND AFT SIDES OF LOWER WEB)COMPLIED IAW CRJ 900 SRM 53-11-10-201-004-A01.STEP 5.B (9) (IDENTIFIED REPAIR PARTS ON BUTTSTRAP PN: 53-11-10-201-004-A01-3 AND LOWER WEB PN: 53-11-10-201-004-A01-1). COMPLIED IAW CRJ 900 SRM 53-11-10-201-004-A01. STEP 5.B (10), CIC ON FWD SIDE OF LOWER WEB)