Spring City Aviation, Inc.: Southeastern Wisconsin's premier Flight Training, Air Charter and Aircraft Brokering company! Spring City Aviation has operated out of the Waukesha County Airport for more than 10 years. From our humble beginnings as a two-man operation, we have grown and become one of the 10 largest flight schools in Wisconsin. On a yearly basis, more than 40 students complete one or more of the training courses offered. The school was established for the purpose of training pilots to a level exceeding the standard, and this continues to be our highest priority.