The ITS automated device (increased torque system) allows :

On the technical side:

To optimize operation on 1, 2 or 3 motors, operation on 4 motors being efficient but uneconomical.

The mode "2 ECO" is the ideal compromise between economy and performance ; it generates a new increased speed equivalent to 106% of the initial speed on 2 engines as well as a fuel economy of between 18% (arrival time unchanged) and 40% (delayed arrival time).

The mode "3 ECO" is the mode reserved for the performance and degraded weather conditions; it generates a new speed increased to 104% of the initial speed on 3 engines and to approaches maximum speed on 4 motors.

The fuel economy is between 15% (arrival time unchanged) and 20% (delayed arrival time).

The mode "1 ECO" is the mode more economic ; it generates a new increased speed equivalent to 108% of initial speed on 1 engine and achieves fuel economy greater than 55%.