breaking out impact by industry

Hi Michael. We understand that you are just beginning to familiarize yourself with the IMPLAN system. To help you in this process, we have included a link to an article on our website that guides you through an introductory tutorial on using the software. You should find this very helpful. http://implan.com/v4/index.php?option=com_multicategories&view=article&id=562:562&Itemid=10 Also, in reference to your comment about doing an impact analysis of air transportation on the local economy, you should remember that the impact of air transportation will go beyond the airport by serving as a gateway for people to access the area (several counties) as a whole, etc. So, you may want to consider multiple counties in framing your study area if would want to show its impact on it entire service area. In addition to airport operations, there may be other impacts such as UPS relies on airport transportation and a purchaser of air service. Its offices (warehousing and administrative) at the airport would likely would not be captured in the airport sector. As far as show spending and total employment impacts split into the individual industries, it will depend on how detail your initial input data is. If you have information on employment by sector and spending by sector, then you can customize your model to reflect this level of detail. When you run your model, the impact results will show which industries are impacted by air transportation in your study region. Just a few comments as you frame your analysis. Please let us know if we can be of further help to you.