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Planes have flashing lights so other planes can see them at night.

Planes have flashing lights so other planes can see them at night.

One wing has a red light and the other has a green light. The lights help pilots know which way each plane is pointing.

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More facts about Air Vehicles

Airplanes have big wings that help them stay up in the sky. Airplanes have big wings that help them stay up in the sky. Helicopters can go straight up, straight down, and even hover in one spot. Helicopters can go straight up, straight down, and even hover in one spot. A hot air balloon floats because the warm air inside is lighter than cool air. A hot air balloon floats because the warm air inside is lighter than cool air. A glider is a plane with no engine that rides on the wind. A glider is a plane with no engine that rides on the wind. The Airbus A380 is the biggest passenger plane, with two full floors of seats. The Airbus A380 is the biggest passenger plane, with two full floors of seats.