Few U.S. Air Force aircraft are as popular among the ground troops of the military as the A-10 Thunderbolt, aka “The Warthog.” And it is as unpopular with our foes in Iraq, Syria, and Afghanistan as it is popular with our troops. The distinctive sound of the jet’s high-bypass turbofan engines is enough to make our foes cringe and hide from sight. 

The A-10 first flew on May 10, 1972, as the war in Vietnam was winding down. The Pentagon recognized the need for an updated Close Air Support (CAS) airframe to support ground troops. The Air Force didn’t want to spend money on a slow-moving airframe and pressed F-4 Phantoms and F-111s into service. But neither performed well at low speeds, so the preferred CAS was the 1940s era A-1 Skyraider. 

The A-10 was authorized for production on February 10, 1976. During its years of service, the A-10 has seen numerous upgrades as it retains its unique mission. It is the only aircraft that was designed around its huge and potent weapons system. 

The main weapon of the A-10 is the General Electric GAU-8/A Avenger, a 30 mm hydraulically driven seven-barrel Gatling-style autocannon. Designed specifically for an anti-tank role, the Avenger delivers very powerful 30mm rounds at a high rate of fire. 

The GAU-8 complete weapons system weighs 4,029 pounds with a maximum ammunition load. It measures 19 ft 5 1⁄2 inches from the muzzle to the rearmost point of the ammunition system. Its ammunition drum is 34.5 inches in diameter and 71.5 inches long. In the attached photo below you can see it in comparison to a VW Beetle.

The business end of an A-10, the GAU-8 30mm cannon next to a VW Beetle. (U.S. Air Force)

The A-10 has become one of the most preferred CAS platforms of American and coalition troops in the Middle East wars. The aircraft has outstanding maneuverability at low airspeeds and altitude and its weapons system is highly accurate. The A-10 can loiter near battle areas for extended periods of time and operate in low visibility and night conditions. 

A-10 pilots are protected by 1,200 pounds of layered titanium armor that also protects parts of the flight-control system, which is referred to as “the bathtub.” The aircraft can survive direct hits from armor-piercing and high explosive projectiles of up to 23mm. Its self-sealing fuel cells are protected by internal and external foam. Manual systems back up the redundant hydraulic flight-control systems; this permits pilots to fly and land when hydraulic power is lost.

General characteristics