American Airlines is moving maintenace work on its fleet of MD-80 airliners to the Kansas City overhaul base – a move that is getting mixed reviews in Kansas City. Union officials were hoping American would have its 737s maintained in Kansas City. They are more modern planes. The MD-80s are among the oldest planes in the American fleet. The Airline and the union both say employment will not be significantly changed. American recently agreed to keep a maintenance base in Kansas City and has tentatively agreed to a 25 year lease.