BK Associates was established in 1984 by William H. Bath and John F. Keitz to provide professional consulting services in virtually every facet of aviation. Although we specialize in aircraft appraisals and related services, the aviation experience of our staff and associates is varied and includes such disciplines as aircraft performance analysis, air traffic control, maintenance facility design, audits of corporate flight operations, airline schedule analysis, noise studies, transportation economics, and management and organization planning. We continue to maintain the resources and database to provide these services.