The Boeing 247 is a pioneering commercial aircraft that first flew in 1933. It was one of the first all-metal, low-wing monoplanes and could carry up to ten passengers. The design featured advanced technology for its time, including retractable landing gear and a fully enclosed cabin, which improved passenger comfort. This aircraft played a significant role in the development of the airline industry, setting new standards for speed and efficiency. The Boeing 247 was used primarily by airlines like United Airlines and helped establish the foundation for modern air travel, influencing future aircraft designs.