The support assembly comprises a fixing system which comprises a first connection rod which is connected via a first end to a support component and which is configured to generate a primary force path and a second connection rod which is connected via a first end to the support component and which is configured to generate a secondary force path, the fixing system further comprising a beam which is fixed to a structural component, the second end of the first connection rod and the second end of the second connection rod being connected to the beam, which is arranged so that the directions of the first and second connection rods are oriented in accordance with a plane substantially orthogonal to the plane of the support component.