A system comprising a fixed wing drone for delivering objects, comprising a wing having an airfoil and having wing control surfaces, at least two drive units, at least one tail assembly having tail control surfaces, wherein the tail assembly is arranged above the wing and behind the wing by a carrier element connected to the wing, at least one structure element protruding towards the rear and accessible from the rear, an object holding device, which is arranged above the wing and is designed to accommodate an object, a control unit, which is designed to control the fixed wing drone, in particular the wing control surfaces, the tail control surfaces, and the drive units, based on control signals, and a receiving unit, which is designed to receive control signals, and a takeoff and landing device for the fixed wing drone comprising an attachment device, which is designed to attach the takeoff and landing device to a structure, in particular to a vertical side of a structure, at least one guide element, which is connected to the attachment device and is designed so that, starting from the attachment device, it leads away from the structure downward and at an angle between 1° and 89°, in particular 12° in relation to the vertical, and a holding element, which is attached transversely to the guide elements and comprises at least one counter structure element accessible from above, characterized in that the structure element of the fixed wing drone and the counter structure element are designed to be interlockable, and the fixed wing drone is displaceable along the holding element by means of the interlocking structure element and counter structure element. a fixed wing drone for delivering objects, comprising a wing having an airfoil and having wing control surfaces, at least two drive units, at least one tail assembly having tail control surfaces, wherein the tail assembly is arranged above the wing and behind the wing by a carrier element connected to the wing, at least one structure element protruding towards the rear and accessible from the rear, an object holding device, which is arranged above the wing and is designed to accommodate an object, a control unit, which is designed to control the fixed wing drone, in particular the wing control surfaces, the tail control surfaces, and the drive units, based on control signals, and a receiving unit, which is designed to receive control signals, and a wing having an airfoil and having wing control surfaces, at least two drive units, at least one tail assembly having tail control surfaces, wherein the tail assembly is arranged above the wing and behind the wing by a carrier element connected to the wing, at least one structure element protruding towards the rear and accessible from the rear, an object holding device, which is arranged above the wing and is designed to accommodate an object, a control unit, which is designed to control the fixed wing drone, in particular the wing control surfaces, the tail control surfaces, and the drive units, based on control signals, and a receiving unit, which is designed to receive control signals, and a takeoff and landing device for the fixed wing drone comprising an attachment device, which is designed to attach the takeoff and landing device to a structure, in particular to a vertical side of a structure, at least one guide element, which is connected to the attachment device and is designed so that, starting from the attachment device, it leads away from the structure downward and at an angle between 1° and 89°, in particular 12° in relation to the vertical, and a holding element, which is attached transversely to the guide elements and comprises at least one counter structure element accessible from above, characterized in that the structure element of the fixed wing drone and the counter structure element are designed to be interlockable, and the fixed wing drone is displaceable along the holding element by means of the interlocking structure element and counter structure element. an attachment device, which is designed to attach the takeoff and landing device to a structure, in particular to a vertical side of a structure, at least one guide element, which is connected to the attachment device and is designed so that, starting from the attachment device, it leads away from the structure downward and at an angle between 1° and 89°, in particular 12° in relation to the vertical, and a holding element, which is attached transversely to the guide elements and comprises at least one counter structure element accessible from above, characterized in that the structure element of the fixed wing drone and the counter structure element are designed to be interlockable, and the fixed wing drone is displaceable along the holding element by means of the interlocking structure element and counter structure element.