Swedish Frog at Angelholm in 1990. The Flygvapnet, Swedish Air Force procured ten Boeing Vertol UH-46Bs from the US in 1963, designated Hkp4A. Ten years later, in 1973, a further eight Kawasaki-built KV107s, designated Hkp4B were purchased. On the picture a Hkp4A, which was eventually sold to the US as N196CH and used by Columbia Helicopters from October 1991. Unfortunately, the Frog was written off on 4 October 1996 in Canby (OR) due to faulty maintenance procedures on flight control system, resulting in three fatalities.