Definition
SURFACE VIEWER
A capability within the Traffic Flow Management System that provides situational awareness for a user-selected airport. The Surface Viewer displays a top-down view of an airport depicting runways, taxiways, gate areas, ramps, and buildings. The display also includes icons representing aircraft and vehicles currently on the surface, with identifying information. In addition, the display includes current airport configuration information such as departure/arrival runways and airport departure/arrival rates.
Source: FAA Pilot/Controller Glossary (verbatim from the Federal Aviation Regulations).