The IA 58 Pucará is of conventional, all-metal (mainly duralumin) construction. The unswept cantilever wings have 7 degrees of dihedral on the outer panels and are fitted with slotted trailing-edge flaps. The IA-58 has a slender fuselage, with a tandem cockpit arrangement; the crew of two is seated under the upward opening clamshell canopy on Martin-Baker Mk 6AP6A zero/zero ejection seats and are provided with dual controls and good visibility, at least in the lateral and front quarters. The clean aerodynamic design allow the Pucará to reach relatively high speed, higher than the American OV-10 Bronco, another COIN aircraft. On the other hand, the IA 58 has no cargo bay inside the fuselage as requested for the American aircraft.