Ну я типа слабо уворачиваюсь
By convention used worldwide, helicopters are categorized by weight. Specifically, "light", "medium lift", and "heavy lift" helicopters. Light helicopters are those generally considered below 12,000 pounds maximum gross weight. "Medium lift" are generally considered those from about 14,000 pounds to 45,000. There is some disagreement in terminology regarding the use of "heavy lift." Some within the industry refer to helicopters above 50,000 pounds as "heavy lift" while others reserve this term for the very largest helicopters, those above 80,000 pounds. Within Army aviation the largest helicopter is the 54,000 pound CH-47D Chinook, most often referred to as a medium lift helicopter.
http://www.globalsecurity.org/milita...aft/rotary.htm
The Boeing Vertol CH-46 Sea Knight is a medium-lift tandem rotor transport
In 1961, the USMC picked the CH-46 as its new medium-lift troop transport, replacing the ageing UH-34.
http://www.globalsecurity.org/milita...raft/ch-46.htm
Так что там насчет класса?
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Да не спец я по самолетам. Тем более некоторые я вообще не знаю. Это же интернет"спецы" во всем и вся.