Freighter aircraft are specially designed or converted airplanes used to transport cargo instead of passengers. They have large cargo doors and spacious interiors to accommodate various types of freight, including pallets and containers. These aircraft play a crucial role in global trade by enabling the quick movement of goods across long distances. Many freighter aircraft are based on commercial passenger models, such as the Boeing 747 or Airbus A330, which are modified to remove passenger seating and install cargo handling systems. They are essential for industries like e-commerce and logistics, ensuring timely delivery of products worldwide.