What was found
DURING C-CHECK, INSPECTION REVEALED SEVENTEEN CRACKED STRUT FRAME ATTACH FITTINGS IN THE LOWER FUSELAGE CARGO COMPARTMENTS. CLOSER INSPECTION REVEALED THE CRACKS TO BE STRESS CORROSION CRACKS ALONG GRAIN LINES. EIGHT FRAMES WERE REPLACED IAW DOUGLAS SRM AND NINE OF THE FRAMES WERE REPAIRED IAW KITTY HAWK E.A. D9-53-042. THE AIRCRAFT WAS RETURNED TO SERVICE. STA 275, 294, 351, 370, 389, 408, 427, 661, 680, 699, 718, 737, BETWEEN L22L AND L25L. STA 237, 256, 294, 389, 661, BETWEEN L22R AND L25R. (X)