Sociedade Aerotec Ltda., Engenharia Aeronautica formed 1968. Designed and built Uirapuru which, as T-23, was ordered by Brazilian, Bolivian, and Paraguayan air forces and civil flying clubs. In the Brazilian Air Force the T-23 succeeded the locally built Dutch Fokker types. Developed A-132 Tangara as potential replacement for T-23 (first flown 1981) but further developed into A-135 Tangara II. Aerotec also produced wings for EMBRAER Ipanema agricultural aircraft, starter pods, and components.