ENGINEERED FOR MAXIMUM PERFORMANCEThe NAV SD is designed for the competition pilot, having all the bells and whistles fly comps fast and effectively but without the Live tracking functions.Don't get caught in airspace With Flymasters 3D airspace warning system you will have ample information to navigate around restriced airspace zones.Know Where You AreFlymaster SD series instruments have amazing worldwide road maps. Plan your flight and you'll never get lost.Design your own instrument Need more or less data on your flight screens, with Flymasters' unique Designer you can create the instrument you like and need for your style of flying.