Follow the link for more information. The A-10 was intended pilot’s manual volume 2 ground school pdf improve on the performance of the A-1 Skyraider and its lesser firepower.
The A-10 was designed around the 30 mm GAU-8 Avenger rotary cannon. The A-10A single-seat variant was the only version produced, though one pre-production airframe was modified into the YA-10B twin-seat prototype to test an all-weather night capable version. In 2005, a program was started to upgrade remaining A-10A aircraft to the A-10C configuration, with modern avionics for use with precision weaponry. By Vietnam, the 1940s-vintage propeller-driven Skyraider was the only dedicated close air support aircraft in the U. This aircraft was slow and vulnerable to defensive fire from the ground.
Post-World War II development of conventionally armed attack aircraft in the United States had stagnated. The lack of modern conventional attack capability prompted calls for a specialized attack aircraft. After a broad review of its tactical force structure, the U. Air Force decided to adopt a low-cost aircraft to supplement the F-4 and F-111. It first focused on the Northrop F-5, which had air-to-air capability. The AH-56 Cheyenne appeared to offer the possibility of handing much of the tactical air-to-ground role to the U. During this period, the United States Army had been introducing the UH-1 Iroquois into service.
First used in its intended role as a transport, it was soon modified in the field to carry more machine guns in what became known as the helicopter gunship role. But the Cobra was a quickly made helicopter based on the UH-1 Iroquois, and in the late 1960s the U. Army was designing the Lockheed AH-56 Cheyenne, a much more capable attack aircraft with greater speed. Air Force, which saw the anti-tank helicopter overtaking its nuclear-armed tactical aircraft as the primary anti-armor force in Europe. The threat of Soviet armored forces and all-weather attack operations had become more serious. The requirements now included that the aircraft would be designed specifically for the 30 mm rotary cannon.
Two YA-10 prototypes were built in the Republic factory in Farmingdale, New York, and first flew on 10 May 1972 by pilot Howard “Sam” Nelson. Production A-10s were built by Fairchild in Hagerstown, Maryland. After trials and a fly-off against the YA-9, on 18 January 1973, the USAF announced the YA-10’s selection for production. A-10 for consideration by the USAF. On 10 February 1976, Deputy Secretary of Defense Clements authorized full-rate production, with the first A-10 being accepted by the Air Force Tactical Air Command on 30 March 1976.