Single-engine aircraft are airplanes powered by one engine, making them simpler and often more cost-effective to operate than multi-engine planes. They are commonly used for general aviation, flight training, and recreational flying. Their design allows for easier maintenance and lower fuel consumption, appealing to private pilots and small businesses. These aircraft come in various types, including piston-powered and turboprop models. Popular examples include the Cessna 172 and Piper PA-28. Single-engine aircraft are typically lighter and have a shorter takeoff distance, making them suitable for smaller airfields and diverse flying conditions.