The Friendship 3 is a French ultralight aircraft with tandem seats, engineered in France and Switzerland, and assembled in Czech Republic by Ivanov Aircraft for the manufacturer, R,S & Associes SAS Erik Sanstroem of Versailles, Yvelines. Inspired by 1950s and 1960s light aircraft and motorgliders, the Friendship 3 is a two-place tandem-seat ultralight aircraft with dual controls, so that the rear seated passenger can also fly.
The company seems to have been founded 2012 and gone out of business in 2014.[1]
The Friendship 3 was designed for both soaring and cross-country powered flying, with a glide ratio of 24:1. The Friendship F3A has a composite fuselage; and wood and fabric for the wings with the main spars in carbon fiber. The aircraft was registered in France in late 2012.[2]