这种方式是在全仪表着陆系统正常时才使用。
This mode is used when full instrument landing system is available.
这类操纵的例子包括编队飞行，仪表飞行和着陆。
Examples of this type of control include formation flying, instrument flight, and landing.
这类操纵的例子包括编队飞行，仪表飞行和着陆。
Examples of this type of control include formation flying, instrument flight, and landing.
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