Helicopter lights are very similar to aeroplane lights
We can see 4 types of lights:
Position lights show the relative position of an aircraft.
These lights show us the relative position of an aircraft:
If green light is visible on the left and red light on the right, the aircraft is approaching in front of us; collision is possible
If green light is visible, the aircraft is going from left to the right; collision is hardly possible
If red light is visible, the aircraft is going from right to the left, collision is hardly possible
If white light is visible in the middle, red light on the left and green light on the right, the aircraft is flying in the same heading in which we are flying, collision is remote
These lights are usually used as soon as the aircraft have some type of electrical power
Anti-collision lights are located at the top and/or at the bottom of the aircraft. These lights are red or white
these lights are used when the aircraft engines are running or when the aircraft is going to make some movement on the platform
Landing lights are used for night take off or landings; these lights are located at the front of the helicopter, over the auxiliary gear
Landing lights can be used as taxi lights at the moment of performing an aerial or rolled taxi.
These lights are used to illuminate the runway and also to make us visible to other traffic or to the tower.
Search lights are located at the front of the aircraft above the auxiliary gear or above the main gear, above left or right gear.
This light can be moved with a switch located on the cyclic.
The main use of this light is to search something in the surroundings of the aircraft, and it has more importance in SAR missions.
Helicopters have one light at the bottom which is used to illuminate the cargo hook during night operations
Some helicopters are equipped with night vision goggles for NVG flights
External lights are also provided for that:
Lights on an aircraft are very important because its principal mission is to avoid a possible collision with other aircraft.