What was found
MCN - MAJOR REPAIR - DURING C-21 CHECK FOUND A CRACK .375 INCH AT 178 BULKHEAD WEB, WL 207, RBL 10. MAINTENANCE REMOVED DAMAGED AREA FROM 178 BULKHEAD WEB, WL 207, RBL 10 IAW BOEING 737-300 SRM 53-10-08 FIG 209. FABRICATED DOULBER AND INSTALLED REPAIR PARTS AT 178 BULKHEAD WEB, WL 207, RBL 10 IAW BOEING 737-300 SRM 53-10-08 FIG 209.