For example, all a VFR pilot has to do to enter Class C airspace is establish two-way radio contact with ATC.
例如，VFR 飞行员进入 C 类空域所要做的就是与空中交通管制建立双向无线电联系。
2
No explicit permission from ATC to enter is needed, although the pilot must continue to obey all regulations governing VFR flight.
尽管飞行员必须继续遵守有关视觉飞行规则的所有规定，但无需获得空中交通管制的明确进入许可。
3
On a clear day, a pilot in controlled airspace can choose a VFR or IFR flight plan, and the FAA regulations were devised in a way which accommodates both VFR and IFR operations in the same airspace.