security system for ultra light aircraft (ulm) provided by a ground station and the integrated system of the control board.the system comes into operation on direct or indirect call received from the ground station, part of the pilot in the event of a situation of extreme danger and / or need (or pilot.adverse weather conditions, the aircraft's instruments offline) or the system itself to the recurrence of certain parameters from the alarm.this is a security system that doesn't replace it interferes with the commands in the hands of the pilot.