Timmerman Airport, MWC, is a small to medium sized airport located approximately 11 miles northwest of General Mitchell International (MKE) airport and on the northern edge of the city of Milwaukee, Wisconsin. The runway configuration consists of two sets of parallel runways that intersect. They are labeled runway 4-22 left and right, and runways 15-33 left and right. The unique aspect of this configuration is that one of each set of runway is turf. The turf runways are 4R-22L and 15R-33L. The turf runways are only used from early May to mid-October. Traffic at the airport is made up of primarily GA, light corporate, and the occasional military aircraft. There is a helicopter community, including a medevac operation.