What was found
DURING EXIT CHECK, INSPECTION REPORTED FWD PRESSURE BULKHEAD SIDE FRAME AT LOWER FUSELAGE, STA. 178, WL 207, RBL 28, CRACKED. REPLACED RT. FRAME PER BOEING SERVICE BULLETIN 737-53A1173, REV. 3, SECTION III, PART XI, POINT I, FIGURES 71 AND 72.