The C-130 is the most popular Western military transport aircraft. It has been in serial production longer than any other aircraft in history and is the backbone of the military transport aircraft of the United States, NATO and other countries. The most massive modification was the C-130H modification, the first flight of the prototype of which took place in 1964, and serial production began in 1965.The aircraft received a new reinforced wing box, improved brakes, new avionics and a power plant with four T56-A- engines. fifteen. To date, more than 2,300 vehicles of various modifications have been manufactured.