HAPI Light

The Hazardous Airfield/Heliport Pattern Indicator (HAPI) Light is a visual aid used in aviation to assist pilots in determining the slope of an approach and landing area. The HAPI light system consists of a series of lights installed alongside the runway or helipad. These lights provide a visual indication of whether the aircraft is on the correct glidepath or if adjustments need to be made. The HAPI light system typically consists of a two-bar configuration, with each bar having a series of lights that emit either red or white color. When the pilot is on the correct glidepath, an equal number of red and white lights will be visible. However, if the pilot is above or below the desired glidepath, there will be an imbalance of red or white lights, indicating the need for descent or climb adjustments. The HAPI light system provides pilots with a quick and clear visual reference, enhancing situational awareness and aiding in maintaining the proper glidepath during approach and landing. It helps pilots avoid excessive approaches or undershooting and promotes safety during critical phases of flight. HAPI lights are designed to comply with aviation regulations and undergo regular inspections to ensure their proper functioning. They are widely used at airfields and heliports, helping pilots accurately judge their descent profile and improving safety in areas with challenging terrain or obstacles. Overall, the HAPI light system is a valuable tool that provides pilots with essential visual feedback on their approach slope, contributing to safer and more precise landings.