What was found
MCN - C21 CK - C - BS 178 PRESS BULKHEAD CENTER WEB HAS A 1 INCH CRACK, WL 227.7 TO 228.7, RBL 6.4, BELOW REINFORCEMENT, FOUND WHILE PERFORMING ULTRASONIC INSPECTION. MAINTENANCE CUT OUT DAMAGED AREA, FABRICATED REPAIR DOUBLER AND FILLER AND INSTALLED REPAIR PARTS IAW B737 SRM 53-10-11 PG 1 - 8.