Nikita, вопрос - вот тут у самих американцев
http://www.af.mil/factsheets/factsheet.asp?fsID=70 - такие данные по самолету:
General Characteristics
Primary Function: A-10 — close air support, OA-10 - airborne forward air control
Contractor: Fairchild Republic Co.
Power Plant: Two General Electric TF34-GE-100 turbofans
Thrust: 9,065 pounds each engine
Length: 53 feet, 4 inches (16.16 meters)
Height: 14 feet, 8 inches (4.42 meters)
Wingspan: 57 feet, 6 inches (17.42 meters)
Speed: 420 miles per hour (Mach 0.56)
Ceiling: 45,000 feet (13,636 meters)
Maximum Takeoff Weight: 51,000 pounds (22,950 kilograms)
Range: 800 miles (695 nautical miles)
Armament: One 30 mm GAU-8/A seven-barrel Gatling gun; up to 16,000 pounds (7,200 kilograms) of mixed ordnance on eight under-wing and three under-fuselage pylon stations, including 500 pounds (225 kilograms) of Mk-82 and 2,000 pounds (900 kilograms) of Mk-84 series low/high drag bombs, incendiary cluster bombs, combined effects munitions, mine dispensing munitions, AGM-65 Maverick missiles and laser-guided/electro-optically guided bombs; infrared countermeasure flares; electronic countermeasure chaff; jammer pods; 2.75-inch (6.99 centimeters) rockets; illumination flares and AIM-9 Sidewinder missiles.
Crew: One
Date Deployed: March 1976
Unit Cost: $9.8 million (fiscal 98 constant dollars)
Inventory: Active force, A-10, 143 and OA-10, 70; Reserve, A-10, 46 and OA-10, 6; ANG, A-10, 84 and OA-10, 18
т.е. скорость 0.56 маха - не выходит 800 км/ч.
А в музее
Wright-Patterson Air Force Base - Error 404 -
указано:
PERFORMANCE
Maximum speed: 450 mph.
Cruising speed: 335 mph.
Range: 800 miles
Service Ceiling: 44,200 ft.
сдается мне это вовсе не knot-ы. Более того, в Range по первой ссылки специально указаны морские и простые мили.