is a laser-based obstacle warning system, which detects obstacles
reliably even if the pilot has difficulties making them out
during the flight, when thin obstacles such as suspended electrical
wires are so thin that they are almost invisible to the pilot.
The system scans the area in front of the helicopter with an
eye-safe laser beam, detecting obstacles such as wires at distances
of up to 1,000 m'. The latest version of HELLAS enables the
pilot better situational awareness by superimposing the obstacle
over a grey-scale image of the terrain in front of the helicopter.
Potential obstacles are displayed in a red color for intuitive
recognition and avoidance.