The Airco DH.6 was a British military trainer biplane used by the Royal Flying Corps during the First World War. Known by various nicknames, including the "Clutching hand" and "Skyhook", many survived to be used as a civil light aircraft in the postwar era.
Airco DH.6
A trainer is a class of aircraft designed specifically to facilitate 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 skills in a more forgiving aircraft.
Grob G 120TP, a trainer aircraft
Valmet L-90 cockpit showing its side-by-side seating
Diamond DA20, a trainer aircraft
Yakovlev Yak-130 two-seat military trainer