What was found
UPPER FUSELAGE MAIN CARGO CABIN FLOOR STRUCTURE AREA AT BODY STATION 540 CENTER FUEL TANK STIFFENERS WITH CRACK AT FOLLOWING POSITIONS. RBL AND LBL7, 15, 32, 41 AND 53. REPLACED STIFFENERS P/N: 111A2401-1 (5EA) AND P/N: 111A2401-2 I-A-W B-737-800 BCF S-R-M 51-10-02-06-0 PARAG 9 REV 19 (N/10/2024) AND BOEING DRAWING 111A2000 ON STA 540 AND FOLLOWING POSITIONS RBL7, 15,32,41 AND 53 AND LBL7,15,32,41 AND 53.