The black box from the Air India plane crash in Ahmedabad has been found. Many people died. The box can help us know why the plane crashed. The plane hit a building after it went up. The box can show what happened with the engine. It can also show what people said in the plane. One person who lived said the plane had problems after it went up. Experts will look at the engine and other things. People from the U.S. will help. They want to stop crashes in the future.