Patent ID: 8762024

Claim:
A system for automatically managing controlling modes in engines of a multi-engine aircraft, said system comprising: (A) a plurality of controlling units respectively associated with the engines of the aircraft, each one of said controlling units comprising: (A1) a first engine controlling parameter determiner configured to determine a first engine controlling parameter associated with a main controlling mode, (A2) a second engine controlling parameter determiner configured to determine the second engine controlling parameter associated with an alternative controlling mode, (A3) a controllable switch, wherein the switch is adjustable between said main controlling mode and said alternative controlling mode, wherein one single controlling mode referred to as a common controlling mode is used at a given instant, wherein said main controlling mode is used in normal operation, and wherein said alternative controlling mode is used at least when said first engine controlling parameter cannot be determined, and (A4) a mode information emitter configured to automatically emit mode information indicating the common controlling mode; and (B) a data transmitter, linking the controlling units of the different engines to at least one monitoring unit, wherein said monitoring unit comprises: (B1) a monitor configured to monitor the mode information emitted by said controlling units so as to be able to detect a situation wherein at least one controlling unit is in the alternative controlling mode thereof, and (B2) a control signal emitter configured to automatically emit at least one control signal to each of the controlling units and to automatically control the controllable switch of each of the controlling units so as to switch each of the controlling units to the alternative controlling mode thereof, when the monitor detects the situation wherein at least one controlling unit is in the alternative controlling mode.