What was found
MCN - MAJOR REPAIR - DURING C19 CHECK DISCOVERED INTERCOSTAL CRACKED, .5 INCHES, AT AFT PRESSURE BULKHEAD BS 1019, WL 208 AND BL 37R. MAINTENANCE DRILLED OUT DAMAGED AREA IAW BOEING 737-300 SRM 51-70-11-0G ITEM 1 FIG 1. FABRICATED ANGLE AND FILLER IAW BOEING 737-300 SRM 51-70-11-0G FIG 1 SHEET 1. INSTALLED FABRICATED REPAIR PARTS AT BS 1019, WL 208 AND BL 37R IAW BOEING 737-300 SRM 51-70-11-0G FIG 1.