然而，如果飞行员持有的仪器等级在其必须持有的基本的飞行员执照等级之上，那么飞行员只能选择仪表飞行规则。
However, a pilot can only choose to fly IFR if they possess an instrument rating which is above and beyond the basic pilot's license that must also be held.
然而，如果飞行员持有的仪器等级在其必须持有的基本的飞行员执照等级之上，那么飞行员只能选择仪表飞行规则。
However, a pilot can only choose to fly IFR if they possess an instrument rating which is above and beyond the basic pilot's license that must also be held.
应用推荐