Who was the first person to make plans for a flying machine in 1490?

The first person to make plans for a flying machine in 1490 was Leonardo da vinci. He sketched designs for various flying devices, including a conceptual helicopter and a flying machine resembling a glider. Da Vinci's innovative ideas were ahead of his time, showcasing his deep understanding of aerodynamics and mechanics, although none of his designs were built during his lifetime. His work laid the groundwork for future aviation developments.