What was found
MCN - MAJOR REPAIR - DURING C-14 CHECK EXFOLIATION CORROSION WAS FOUND ON THE LOWER SURFACE OF CREASE BEAM SUPPORT ANGLE BS 331, LBL 57, WL 208. MAINTENANCE REMOVED CORROSION AND FOUND MATERIAL LOSS OUT OF LIMITS, REMOVED DAMAGED CREASE BEAM SUPPORT ANGLE BS 331, LBL 57, WL 208; FABRICATED A NEW REPLACEMENT CREASE BEAM SUPPORT ANGLE; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02, PG. 3-4, & 10-11.