Cut-outs are necessary openings at webs and panels to provide access to let other members such as control rods or cables, hydraulic lines, electrical wire bundles, etc., pass through. Other cut-outs such as windows, doors, servicing panels, hatches, bomb-bays, inspection access holes, etc. Need an extensive structural assessment to meet safety margins. As soon as a hole is made in a load-bearing skin, a stronger surrounding structure must be introduced to provide alternate paths to carry the loads. An extra material is added to the web namely stiffeners or doublers in order to provide stiffness to the web. Therefore it is necessary to repeat the analysis of the structure to be safe against the large bending loads to arrive at Factor of Safety (FOS) through Shear and Tensile check. The current paper analysis aircraft structural material Aluminium alloy 2024-T4 is studied witha cut-out (designed to provide access to a fuel filling pipe) and the cut-out doubler (donut in the current case) to ensure that the structure will be safe enough to carry out the loads generatedthe results obtained for cut-out have been observed and conclusions are drawn from it.