System for managing the deceleration of an aircraft on a runway on the ground enabling the control in real time of the position (X1, X2, X3, X4, X5, X6, X7, X8, X9) of the aircraft on a braking axis of the runway , comprising: - Braking means configured to brake the aircraft ; - A calculator configured to: ∘ Calculate, from aircraft data and from external data comprising data on the state of the runway and meteorological data on the ground, a sequence of use of the braking means intended to brake the aircraft along the braking axis , over a predetermined braking distance associated with a predetermined braking duration comprising a plurality of braking instants each associated with a predetermined position (X1', X2', X3', X4', X5', X6', X7', X8', X9') on the braking axis , the sequence of use of the braking means being defined as an ordered series of use of the braking means comprising the activation/deactivation of the different braking means and their characteristics of use; ∘ Update in real time, the sequence of use as a function of the difference, along the braking axis , between the position of the aircraft and the predetermined position (X1', X2', X3', X4', X5', X6', X7', X8', X9') associated with a given braking instant, or the occurrence of a given event; - Control means configured to control the braking means as a function of the sequence of use or an instruction sent by a runway overrun alert system of the aircraft . - Braking means configured to brake the aircraft ; - A calculator configured to: ∘ Calculate, from aircraft data and from external data comprising data on the state of the runway and meteorological data on the ground, a sequence of use of the braking means intended to brake the aircraft along the braking axis , over a predetermined braking distance associated with a predetermined braking duration comprising a plurality of braking instants each associated with a predetermined position (X1', X2', X3', X4', X5', X6', X7', X8', X9') on the braking axis , the sequence of use of the braking means being defined as an ordered series of use of the braking means comprising the activation/deactivation of the different braking means and their characteristics of use; ∘ Update in real time, the sequence of use as a function of the difference, along the braking axis , between the position of the aircraft and the predetermined position (X1', X2', X3', X4', X5', X6', X7', X8', X9') associated with a given braking instant, or the occurrence of a given event; ∘ Calculate, from aircraft data and from external data comprising data on the state of the runway and meteorological data on the ground, a sequence of use of the braking means intended to brake the aircraft along the braking axis , over a predetermined braking distance associated with a predetermined braking duration comprising a plurality of braking instants each associated with a predetermined position (X1', X2', X3', X4', X5', X6', X7', X8', X9') on the braking axis , the sequence of use of the braking means being defined as an ordered series of use of the braking means comprising the activation/deactivation of the different braking means and their characteristics of use; ∘ Update in real time, the sequence of use as a function of the difference, along the braking axis , between the position of the aircraft and the predetermined position (X1', X2', X3', X4', X5', X6', X7', X8', X9') associated with a given braking instant, or the occurrence of a given event; - Control means configured to control the braking means as a function of the sequence of use or an instruction sent by a runway overrun alert system of the aircraft . <EOS>