Terprom is like a wizard for airplanes that helps them fly safely. Just like when you are playing a game or following a map, you need to know where you are and where you need to go. Terprom does just that for airplanes, but in a much more awesome way.
It is like a special computer that helps pilots see where they are going and makes sure they don't hit anything on the way. It uses special sensors to create a 3D map of the surroundings and then gives pilots information about the height, speed, and direction they should go in. Terprom can tell the pilots if they are too close to the ground or too close to mountains or buildings – things that pilots can't see with their own eyes.
So, just like you have a GPS to help you get to a place you've never been, terprom helps planes get to their destination safely. It's like having a super smart and safe co-pilot in the cockpit!