the aiglon is an all-metal low-wing monoplane with a fixed tricycle landing gear and powered by a nose-mounted 180 hp (134 kw) lycoming o-360-a3ad or a lycoming o-360-a3a engine. it was based on the early hr100 but had a lighter airframe and new fin and rudder. the prototype first flew on 25 march 1977 and the production version with detail improvements was certified on 19 september 1978.