Helicopter Emergency Egress Lighting Systems (HEELS) identifies emergency escape hatches, exits and push-out windows by illuminating their perimeter to guide you to safety during emergency situations.

Automatic illumination occurs if aircraft power is lost or when the lighting system water sensor becomes immersed in water. HEELS can also be manually illuminated using a three mode ON, OFF, ARMED cockpit switch. HEELS is also a battery-operated independent lighting system. A typical HEELS installation consists of an array of light emitting diodes on substrate placed around escape hatches or doors. The system has two water sensors, each of which will activate lighting upon immersion. An optional aircraft Permanent Magnet Generator (PMG) interface unit monitors rotor rpm and interfaces the HEELS to the aircraft. The system is activated upon signal loss. When the rotors fall below a threshold rpm, the HEELS will automatically illuminate. The Control Unit consists of an electronic module with a removable battery pack, which automatically recharges during flight.