System for driving a slat of an aircraft, comprising: - a first hinge support element of an aircraft wing structure, - a second hinge support element of the aircraft wing structure, - a first arm device, a second arm device and a third arm device, wherein the first arm device being rotatablely connected by an associated first connection junction to the first hinge support element, comprising a second connection junction being configured to be rotatablely connected to a rear portion of the slat, which remains rearward of a front portion during driving the slat, having a steady curved shape between the first connection junction and the second connection junction at least in a last third end section, where the first connection junction is located, and comprising a third connection junction arranged between the first and second connection junction (50, 52), of the first arm device; wherein the second arm device being linearly extendable, being rotatablely connected by an associated first connection junction to the second hinge support element, comprising a second connection junction being configured to be rotatablely connected to the front portion of the slat, and comprising a third connection junction arranged between the first and second connection junction (58, 60), of the second arm device; and wherein the third arm device being rotatablely connected by an associated first connection junction to the third connection junction of the first arm device, and characterised in that the third arm device is rotatablely connected by an associated second connection junction to the third connection junction of the second arm device. - a first hinge support element of an aircraft wing structure, - a second hinge support element of the aircraft wing structure, - a first arm device, a second arm device and a third arm device, wherein the first arm device being rotatablely connected by an associated first connection junction to the first hinge support element, comprising a second connection junction being configured to be rotatablely connected to a rear portion of the slat, which remains rearward of a front portion during driving the slat, having a steady curved shape between the first connection junction and the second connection junction at least in a last third end section, where the first connection junction is located, and comprising a third connection junction arranged between the first and second connection junction (50, 52), of the first arm device; wherein the second arm device being linearly extendable, being rotatablely connected by an associated first connection junction to the second hinge support element, comprising a second connection junction being configured to be rotatablely connected to the front portion of the slat, and comprising a third connection junction arranged between the first and second connection junction (58, 60), of the second arm device; and wherein the third arm device being rotatablely connected by an associated first connection junction to the third connection junction of the first arm device, and characterised in that the third arm device is rotatablely connected by an associated second connection junction to the third connection junction of the second arm device.