The invention is related to an aircraft with a plurality of aircraft doors, each aircraft door 4d comprising at least one lock lever 6 that is provided for engaging a counterpart 7 in an engaged statefor locking a respective aircraft door 4d relative to the aircraft, wherein a real-time monitoring device 8 is provided for generating a real-time representation 12 of the at least one lock lever 6 and the counterpart 7, the real-time representation 12 being suitable for determining whether the at least one lock lever 6 is in the engaged state.