Are LED Lights Effective for Ground-to-Air Signals?

Choosing the Right LED Lights

For ground-to-air signaling, select LED lights with a high intensity of at least 2000 candelas, a narrow beam angle (less than 10 degrees), and a wavelength of around 620-750 nanometers (red light) to be more visible from a distance. Some examples of suitable LED lights include 10-watt high-intensity LEDs or specialized aviation beacons.

Effective Signaling Techniques

To effectively use LED lights for ground-to-air signaling, aim the light source directly at the aircraft, ideally at an altitude of around 1,000 to 2,000 feet, and maintain a consistent signal pattern. For example, flash the light three times to signal distress, followed by a one-minute pause, then repeat. This pattern can be seen from a considerable distance and can help communicate your location and intentions to aircraft. Additionally, use red lights to minimize confusion with other light sources and to reduce the risk of eye damage for pilots.