If additional trainer aircraft are needed, the Pentagon plans to redesignate some of its existing rotorcraft rather than buying new airframes.
如果需要额外的训练机，五角大
一些现有的旋翼飞机而不是购买新的。
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They merged with Boeing and released a new model, the Model 114, which can be considered the ancestor of today's CH-47. In 1962, the HC-1B was redesignated as the CH-47A under the 1962 United States Tri-Service Aircraft designation system.
他们与波音公司合
， 
布了一款新机型， 即114型，可以被认为是今天CH-47的祖先。 1962
， HC-1B被重新命名为CH-47A， 这是根据1962美国三军飞机命名系
的。
