What was found
MCN - MAJOR REPAIR - DURING C-18 CHECK A 1 1/2" CRACK WAS FOUND ON WEB UPPER CHORD (ATTACH ANGLE) AT FASTENER HOLES BS 500B TO BS 520, BL 0, WL 208.1. MAINTENANCE REMOVED WEB UPPER CHORD BS 500B TO BS 520, FABRICATED A REPAIR ANGLE AND INSTALLED REPAIR IAW DWG 69-41680, AND B737-200 SRM 51-30-2, FIG 7, PG. 32, SRM 51-10-2, FIG 2, PG. 7 & 32, AND SRM 51-10-1, PG. 10.