The Pucara's narrow, semi-monocoque fuselage has a deep forward section. An armored cockpit floor protects the pilots. The g limits of Pucara is +6/-3. The stalky main landing gear struts retract forward into the engine nacelles. The nose gear retracts forward into a well ahead of the cockpit. A single-piece canopy is hinged to the rear. The pilot rides in the forward, lower seat; the rear, co-pilot seat is 10 in (250 mm) higher. The pilot has a reflector gunsight for the weapons system.

“普卡拉”狭窄的半硬壳机身的前端前伸，两名飞行员能得到装甲座舱的保护。全机过载限制为+6/-3G。主起落架向前收入发动机舱，前起落架向后收入座舱前的舱室。整体座舱盖铰接在座舱后部。飞行员坐在前方较矮的座椅上，副飞行员坐在后边升高250mm的座椅上。飞行员有良好的武器射击视野。

The Pucara`s armament are 2 internal Hispano HS804 20-mm cannon and 4 internal FN Browning 7.62-mm guns on each side of the cockpit. Modern attack aircrafts seldom carry the machineguns because of the short range and little damage to armor targets, but Pucara is widly used in low intension mission against guerilla. On the centerline pylon, it can carry 2,205-lb (1,000-kg) weapons, as well as a 1,102-lb (500-kg) pylon under each wing, outboard of the engines, carry bombs, rocket pods, gun pods, and drop tanks.

固定武器系统包括两门希斯帕诺HS804 20mm机炮，四挺FN勃郎宁7.62mm机枪布置在座舱两侧。现代攻击机很少采用机枪，因为射程太短，威力不足以对付装甲目标。但“普卡拉”常用于对付游击队性质目标的低强度任务。在机身中线挂架上，可外挂1000千克武器。机翼发动机舱外段的500千克挂架可携带炸弹、火箭弹发射器、机炮吊舱和副油箱等。

The IA58A is the first production 2-seat version. 108 produced for Argentina, six of which were later sold to Uruguay. Some have been fitted with an extra fuel tank in place of the rear seat, opaqued rear half of canopy. The IA58B is fitted with 30mm cannon armament in deepened front fuselage, avionics upgraded. Prototype flew on 15 May 1979, but never enter production. The IA58C Single-seat version with "broken nose" housing 30mm DEFA 553 cannon, hardpoints on outer wings for Magic 2 air-to-air missiles, existing wing pylons able to carry and launch Martin Pescador anti-ship missiles or 2 more Magic 2. Avionics include Hea

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