What was found
MCN - DURING C16 CHECK DISCOVERED VERTICAL BEAM WEB CRACKED, 0.75 INCHES, AT BS 178, WL 182, BL 17.1L. MAINTENANCE CUT OUT AND REMOVED CRACKED VERTICAL BEAM WEB AT BL 17.1L, BS 178 AFT SIDE OF BULKHEAD WL 182. FABRICATED DOUBLER AND REPAIR WEB IAW BOEING 737-300 SRM 53-10-08-2R FIG 201. INSTALLED FABRICATED DOUBLER AND REPAIR WEB ON VERTICAL BEAM AT BL 17.1L, BS 178 AFT SIDE OF BULKHEAD WL 182 IAW BOEING 737-300 SRM 53-10-08-2R FIG 201.