The LSZ-860 Lightning Sensor System (LSS) is used to detect areas of lightning activity in a 200-nautical mile radius around the aircraft and to give the operator a visual display of its position relative to the aircraft and the lightning rate-of-occurrence. The LSS detects both visible and high energy invisible electromagnetic and electrostatic discharges (lightning) that may indicate areas of turbulent activity. After evaluating the LSS display, and its relation to the precipitation indicated by the weather radar display, the pilot can plan a course to avoid the hazardous weather.