Aircraft fuselage frame element

Aircraft fuselage frame assembly, comprising:

• a first lower frame element;
• a second upper frame element;
• a third frame element made of a cross member section, floor strut section and frame section, wherein the third frame element is formed as a single, integral triangle element having a hypotenuse that is curved to adopt a curvature of the aircraft fuselage and joining portions at angle areas of the triangle;
• a lower frame link joined to the first lower frame element and joined by a connection link at a first angle area of the triangle element;
• an upper frame link joined to the second upper frame and joined by a connection link at a second angle area of the triangle element;
• and
• a floor cross member joined at a third angle area of the triangle element,
• wherein the floor cross member joined at the third angle area is comprised of an I-beam having horizontal branches removed at the angle area at which the floor cross member is joined to the triangle element to form a flat or overlapping connection.