Navdata (also known as FMS Data) is a general purpose dataset used for in a wide array of applications ranging from flight planning systems in the operations office to various navigational and performance systems onboard. Subsequently the data contains a massive amount of information to determine not only location of airports and waypoints, but also surface type and slope of runways, the layout of airport gates, navaid frequencies, holding patterns, obstacles close to defined routes, and much more. Navigraph has provided navdata to the flight simulation community since October 2006 after the merger with Richard Stefan of NAVData-Service who had previously worked on similar data processing since 1999.