Cargo aircraft are specialized airplanes designed primarily for transporting goods rather than passengers. They come in various sizes and configurations, ranging from small planes that carry local shipments to large freighters like the Boeing 747 that can transport heavy and oversized cargo over long distances. These aircraft often have large doors and a spacious interior to accommodate different types of freight. Many cargo aircraft are equipped with advanced technology to ensure safe and efficient transport. They can carry a wide range of items, including perishable goods, electronics, and medical supplies. Cargo airlines, such as FedEx and UPS, utilize these planes to provide fast delivery services worldwide.