Helipad Approach Path Indicator Helicopter Approach Path Indicator HAPI light for heliport lighting

A Helipad Approach Path Indicator (HAPI) or Helicopter Approach Path Indicator is a vital visual aid designed to guide helicopter pilots during the final approach and landing phases. It provides real-time feedback on the helicopter's glide path to ensure a safe and precise descent to the helipad. The system uses a series of color-coded lights, typically green and red, to indicate whether the aircraft is on the correct approach slope. Green lights signal that the helicopter is on the proper glide path, while red lights warn that the approach is too steep or too shallow, allowing the pilot to adjust accordingly.

HAPI lights are commonly installed at heliports, hospital rooftops, offshore platforms, and other critical landing areas. The system enhances safety during low-visibility conditions, such as nighttime or poor weather, by offering clear, visible guidance for pilots. Built with durable, weather-resistant materials and energy-efficient LED technology, modern HAPI systems require minimal maintenance and provide long-lasting performance. Compliant with international standards such as those from ICAO and FAA, they are designed to meet the specific needs of helicopter operations, ensuring safe landings in various environments.

The elevation angle of the Helicopter Approach Path Indicator (HAPI) should be set so that when a pilot observes the upper limit of the "Below Slope" sector (Fixed Red) during their approach, there is a sufficient safety margin between the helicopter and any obstacles in the approach path.

The HAPI system provides four distinct light signals based on the aircraft's position relative to the ideal glide slope:

1. A flashing green light indicates the helicopter is above the optimal approach slope (too high).

2. A steady green light means the helicopter is on the correct slope.

3. A steady red light shows the helicopter is slightly below the optimal slope (slightly too low).

4. A flashing red light signals that the helicopter is significantly below the ideal slope (too low).

     Compliance:

1. ICAO Annex 14 Volume II Heliports 5.3.

2. FAA  AC 150/5390-2A Heliport Design Guide

     Features:

1. Equipped with high-intensity, super-bright LEDs that provide optimal brightness while minimizing energy consumption.

2. Compatible with both DC (12-48V) and AC (100-265V, 50-60Hz) input voltages for versatile power options.

3. Features a clear polycarbonate lens that focuses the light and offers robust corrosion resistance along with UV protection.

4. The advanced photometric design ensures superior light distribution, fully meeting ICAO and FAA standards.

5. Constructed from stainless steel, the housing offers exceptional resistance to corrosion and protects against shocks and vibrations.

6. The bright yellow base, powder-coated with UV protection, enhances visibility in all conditions.

7. The specially designed fragile coupling minimizes the risk of secondary damage to helicopters.  

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The Helipad Approach Path Indicator (HAPI) is a critical safety system for guiding helicopter pilots during the final approach and landing phases. It uses a series of color-coded lights to indicate whether the helicopter is on the correct glide path. Green lights signal an optimal approach, while red lights warn if the helicopter is too high or too low. HAPI lights enhance safety in low-visibility conditions and are commonly used in heliports, hospital rooftops, and offshore platforms, ensuring accurate and safe landings.