Circling to land is a relatively dangerous maneuver. It contains the worst elements of IFR flight. There is a minimum obstruction clearance, a limited space in which to maneuver, an absence of visual reference, and trying to keep the runway in sight while preparing to land. At night it is quite a bit more than dangerous. The required continuous turn in marginal conditions that keeps the airport in sight is hazardous. Therefore, this paper proposes an application of GNSS to circling approach to reduce or remove chances of accidents which may occur under such unfavorable flight conditions. The study reviews relevant documents published by ICAO and FAA and provides scenarios for non-precision and precision approaches and circling approach based on the GNSS for Kimhae airport. Also requirements for the ground facility design are studied and provided.