Mounting rail arrangement for an aircraft floor, floor structure and aircraft having the same

A mounting rail arrangement for an aircraft floor, the mounting rail arrangement comprising:

• a first mounting rail having a first bottom leg, a first top leg, and a first mounting portion, wherein the first mounting portion is arranged between the first bottom leg and the first top leg;
• a second mounting rail having a second bottom leg, a second top leg, and a second mounting portion, wherein the second mounting portion is arranged between the second bottom leg and the second top leg;
• and
• a mounting bolt comprising a cross hole for receiving an attachment bolt, wherein the attachment bolt is inserted in the cross hole and fixed to the mounting bolt to protrude above the top legs and prevent the mounting bolt from sliding out of the mounting holes;
• wherein the first and second mounting portions face each other and define a gap therebetween, the gap separating the first bottom leg from the second bottom leg and the first top leg from the second top leg;
• wherein the first mounting rail is separated from the second mounting rail by the gap;
• wherein the first mounting portion comprises a first mounting hole;
• wherein the second mounting portion comprises a second mounting hole;
• and
• wherein the first mounting hole is aligned with the second mounting hole and the mounting bolt extends through the first and second mounting holes.