Action commands to turn on and off the radar on the planes are inverted in the action menu, i mean:

Radar si (eng: radar on) activates the action to turn off the radar
Radar no (eng: radar off) activates the action to turn on the radar

The correct translation by the way should be as follows:

Radar Acceso (eng: radar on) the action to turn on the radar
Radar Spento (eng: radar off) the action needed to turn off the radar

this last one is the most correct translation for it i mean it should be:

Radar Acceso (eng: radar on)
Radar Spento (eng: radar off)