The Tipsy Nipper T.66 is a light aircraft developed in 1952 by Ernest Oscar Tips of Avions Fairey at Gosselies in Belgium. It was designed to be easy to fly cheap to buy and cheap to maintain. It was designed for both factory production and homebuild. Nipper was the nickname of Ernest Tip's first grandchild. The first aircraft flew on 12 December 1957 with test pilot Bernard Neefs.