Asset Information Repository (AIR) is a read-only web application that contains asset information from Railinc's Asset Health source-system products, including the Equipment Health Management System (EHMS), the Early Warning System (EWS), the Damaged and Defective Component Tracking (DDCT) system, Umler®, and E-Train.

Railroads can use AIR web services to query asset health information contained in all of these systems as well as mileage information.

Note: AIR is only available to the seven Class I railroads.