5th FAI World Rally Flying Championship took place between May 29 - June 1, 1986 in Castellón de la Plana in Spain.
There were 57 crews from 18 countries: Spain (5), West Germany (5), South Africa (5), Italy (5), Sweden (4), United Kingdom (4), Argentina (4), Poland (3), Luxembourg (3), France (3), the Netherlands (3), Chile (3), Denmark (3), Austria (2), Switzerland (2), Morocco (1), Venezuela (1), Ireland (1).
References
5th FAI World Rally Flying Championship Wikipedia(Text) CC BY-SA