Aircraft Shopper Online (www.aso.com) introduced a feature last month that lets buyers search by region for aircraft listed for sale. In addition to the Americas, regions are provided in Europe, Asia, Australia, Oceana and Africa. Specific locations within these regions can be selected. To further narrow down the search area, users can click on a search radius within each location selected. This in turn produces a list of aircraft for sale that meet the criteria of the potential buyer.