A tilt-and-turn window for a building, the window comprising: - at least one sash, - a frame, - a fitting system between the frame and the sash, ∘ the fitting system being of the turning-tilting type, so that the sash can be pivoted relative to the frame about a first axis of rotation and the sash can be tilted relative to the frame about a second axis of rotation, ∘ the fitting system comprising locking elements, ∘ the locking elements of the fitting system being configured to occupy at least: ▪ a locked state, so as to hold the sash relative to the frame in a locked closed position, ▪ a first unlocked state, so as to allow the sash to pivot with respect to the frame about the first axis of rotation, and ▪ a second unlocked state, so as to allow the sash to tilt relative to the frame about the second axis of rotation, - a motorised drive device configured to move the sash by tilting it relative to the frame, ∘ the motorised drive device comprising: ▪ an electromechanical actuator, the electromechanical actuator comprising an electric motor and an output shaft, the electromechanical actuator being arranged on a fixed part relative to the window, characterised in that: - the motorised drive device further comprises: ▪ at least one flexible element, the flexible element being configured to be set in motion by the electromechanical actuator, - the flexible element is connected to a movable element of the fitting system, and - following the movement of the movable element of the fitting system into a position corresponding to one of the states of the locking elements of the fitting system by means of the motorised drive device, the electromechanical actuator is configured to be electrically actuated, so as to drive the output shaft of the electromechanical actuator into a neutral position, in which at least one strand of the flexible element is slack. - at least one sash, - a frame, - a fitting system between the frame and the sash, ∘ the fitting system being of the turning-tilting type, so that the sash can be pivoted relative to the frame about a first axis of rotation and the sash can be tilted relative to the frame about a second axis of rotation, ∘ the fitting system comprising locking elements, ∘ the locking elements of the fitting system being configured to occupy at least: ▪ a locked state, so as to hold the sash relative to the frame in a locked closed position, ▪ a first unlocked state, so as to allow the sash to pivot with respect to the frame about the first axis of rotation, and ▪ a second unlocked state, so as to allow the sash to tilt relative to the frame about the second axis of rotation, ∘ the fitting system being of the turning-tilting type, so that the sash can be pivoted relative to the frame about a first axis of rotation and the sash can be tilted relative to the frame about a second axis of rotation, ∘ the fitting system comprising locking elements, ∘ the locking elements of the fitting system being configured to occupy at least: ▪ a locked state, so as to hold the sash relative to the frame in a locked closed position, ▪ a first unlocked state, so as to allow the sash to pivot with respect to the frame about the first axis of rotation, and ▪ a second unlocked state, so as to allow the sash to tilt relative to the frame about the second axis of rotation, ▪ a locked state, so as to hold the sash relative to the frame in a locked closed position, ▪ a first unlocked state, so as to allow the sash to pivot with respect to the frame about the first axis of rotation, and ▪ a second unlocked state, so as to allow the sash to tilt relative to the frame about the second axis of rotation, - a motorised drive device configured to move the sash by tilting it relative to the frame, ∘ the motorised drive device comprising: ▪ an electromechanical actuator, the electromechanical actuator comprising an electric motor and an output shaft, the electromechanical actuator being arranged on a fixed part relative to the window, - the motorised drive device further comprises: ▪ at least one flexible element, the flexible element being configured to be set in motion by the electromechanical actuator, - the flexible element is connected to a movable element of the fitting system, and - following the movement of the movable element of the fitting system into a position corresponding to one of the states of the locking elements of the fitting system by means of the motorised drive device, the electromechanical actuator is configured to be electrically actuated, so as to drive the output shaft of the electromechanical actuator into a neutral position, in which at least one strand of the flexible element is slack.