What was found
MCN - MAJOR REPAIR - DURING C16 CHECK, DISCOVERED VERTICAL WEB CRACKED, .5 INCHES IN LENGTH, AT BS 180, WL 229 AND BL 17.1R. MAINTENANCE REMOVED DAMAGED AREA FROM VERTICAL WEB IAW BOEING 737-300 SRM 53-10-08-2R 12. FABRICATED REPAIR WEB AND TAPERED SHIMS IAW BOEING 737-300 SRM 53-10-08-2R 12,. INSTALLED FABRICATED REPAIR PARTS AT BS 180, WL 229 AND BL 17.1R IAW BOEING 737-300 SRM 53-10-08-2R12 FIG 201.