Other types were considered, but the good results achieved by Widmaier called attention of the selection group.

[1] IPE started the process of adaptations required for certification and assembly production: taller cockpit, redesigned nose, and enlarged rudder,[2] it achieved Brazilian certification in December 1976 and was produced by IPE (Indústria Paranaense de Estruturas) under contract by the Brazilian Government.

Francisco Leme Galvao,[3] and built by IPE, the GB had a different nose, winglets, laminar profile and retractable wheel.

The maiden flight took place on October 15, 1982, flow by Wolfram Gabler at Palmeira das Missoes, Brazil.

Developed independently, with a new cockpit, wing plan-form, vertical tail, and fixed mono wheel.