What was found
MCN - DURING C19 CHECK DISCOVERED VERTICAL WEB CRACKED, .25 INCHES, AT BS 178, WL 176 AND FROM BL 5L TO BL 7L. MAINTENANCE CUT OUT CRACKED SECTION OF WEB IAW BOEING 737-300 SRM 53-10-08-2R12 FIG 201. FABRICATED REPLACEMENT WEB IAW BOEING 737-300 SRM 53-10-08-2R12 FIG 201. INSTALLED FABRICATED REPLACEMENT PART AT BS 178, WL 183 AND FROM BL 5L TO BL 7L IAW BOEING 737-300 SRM 53-10-08-2R12 FIG 201.