Passenger aircraft are specially designed airplanes that transport people from one location to another. They come in various sizes, ranging from small regional jets to large international airliners. These aircraft are equipped with comfortable seating, restrooms, and often in-flight entertainment to enhance the travel experience for passengers. Most passenger aircraft operate under commercial airlines, such as American Airlines or Delta Air Lines, and follow strict safety regulations set by aviation authorities like the Federal Aviation Administration (FAA). They typically fly at altitudes of 30,000 to 40,000 feet and can cover long distances quickly, making air travel a popular choice for both business and leisure.