High Quality Content by WIKIPEDIA articles! A trainer is a class of aircraft designed specifically to facilitate in-flight training of pilots and aircrews. The use of a dedicated trainer aircraft with additional safety features—such as tandem flight controls, forgiving flight characteristics and a simplified cockpit arrangement—allows pilots-in-training to safely advance their real-time piloting, navigation and/or warfighting skills without the danger of overextending their abilities alone in a fully featured aircraft.