A device for connecting parts of an aircraft engine, said device comprising a first and a second connectors suitable for connecting a first and a second parts so as to establish a physical transfer link between said first and second parts, said connection device being characterized in that it further comprises: - emitting means, adapted to generate a determined physical signal; - first transmission means, adapted to transmit the determined physical signal between at least first, second and third determined components of the first and second connectors; - the first component, included in the first connector, having a first determined impedance, relative to said physical signal; - said at least a second and a third components, included in the second connector, having respectively a second and a third determined impedance, relative to said physical signal, said second impedance being different from said third impedance; - at least one first connecting element, included in the first connector, associated with the first component, and adapted to establish a connection link with at least one second and one third connecting element, included in the second connector, and respectively associated with the second and third component; - detection means, adapted to measure at least one characteristic representative of the determined physical signal circulating in the first, second and third components; - second transmission means, adapted to transmit measurement data from the detection means to first processing means; - first processing means, adapted to receive measurement data from the detection means and generate information representative of a connection state between the first and second parts of the aircraft engine based on said measurement data; and - display means (115, 116, 117), adapted to display the information representative of a connection state between the first and second parts of the aircraft engine. - emitting means, adapted to generate a determined physical signal; - first transmission means, adapted to transmit the determined physical signal between at least first, second and third determined components of the first and second connectors; - the first component, included in the first connector, having a first determined impedance, relative to said physical signal; - said at least a second and a third components, included in the second connector, having respectively a second and a third determined impedance, relative to said physical signal, said second impedance being different from said third impedance; - at least one first connecting element, included in the first connector, associated with the first component, and adapted to establish a connection link with at least one second and one third connecting element, included in the second connector, and respectively associated with the second and third component; - detection means, adapted to measure at least one characteristic representative of the determined physical signal circulating in the first, second and third components; - second transmission means, adapted to transmit measurement data from the detection means to first processing means; - first processing means, adapted to receive measurement data from the detection means and generate information representative of a connection state between the first and second parts of the aircraft engine based on said measurement data; and - display means (115, 116, 117), adapted to display the information representative of a connection state between the first and second parts of the aircraft engine.