What was found
LCQ - MAJOR REPAIR - DURING C-15 CHECK CORROSION WAS FOUND ON FLOOR SUPPORT BEAM AND NUTPLATE IN THE AFT CARGO COMPARTMENT AT BS 860, LBL 2.5. MAINTENANCE REMOVED THE NUTPLATE AND CLEANED CORROSION ON FLOOR SUPPORT BEAM AT FS 860, LBL 2.5 IAW 51-40-02 PG 1, 53-60-53, PG 108, .047 MATERIAL REMAING. FABRICATED 2 EACH REPAIR ANGLES, TREATED AND PRIMED ANGLES, AND INSTALLED REPAIR PARTS IAW B737-300 SRM 53-00-53, PG. 201, MM 51-21-21 PG. 705-705.