Airplane Flight Manual Supplement

190-00682-02 Rev. D Hawker Beechcraft C90A and C90GT King Air
Page 111 of 117
SYNTHETIC VISION
General
The SVS sub system is dependent upon terrain data provided by the underlying G1000 system. If, for
some reason, the terrain data is not available from the G1000, all of the components of the SVS system
will be unavailable. The flight path marker, horizon heading, and airport signs are all sub-components of
the Synthetic Terrain display and are only available when Synthetic Terrain is enabled. Those features
are selected or de-selected using the PFD softkeys on the SVS menu.
Synthetic Terrain
The synthetic (3D) terrain display on the PFD provides a perspective view of the terrain ahead of the
aircraft showing ground features up to 30 degrees left and 35 degrees right of the airplane heading
. The
terrain display is derived from the same terrain data contained in the G1000 system that is optionally used
to display terrain on the MFD map display. The terrain data has a resolution of 9 arc-seconds, this
means that the terrain elevation contours in the database are stored broken down into squares
9 arc-seconds on each side. That data is processed and smoothed by the G1000 system to provide the
synthetic terrain display. In some instances, terrain features such as lakes in mountainous areas may be
presented by the SVS system as if the lake water extends somewhat up the mountainside. This is due
to the limitations of the terrain database resolution but is not significant for the approved uses of the SVS
system.
The SVS terrain display will show land contours; large water features; and, towers and other obstacles
over 200 ft AGL (including buildings), that are included in the G1000 obstacle database. In order to
provide a clean, uncluttered PFD display, cultural features on the ground such as; roads and highways,
railroad tracks, cities, and political boundaries (state / county lines) are not displayed on the PFD even if
those features are selected for display on the MFD. The colors used to display the terrain elevation
contours are similar to those used on the MFD map. The terrain display also includes a north-south,
east-west grid to assist in orientation relative to the terrain.
The terrain display is intended to serve as an awareness tool only. It may not provide either the accuracy
or fidelity, or both, on which to solely base decisions and plan maneuvers to avoid terrain or obstacles.
Navigation must not be predicated solely upon the use of the TAWS, Terrain or Obstacle data displayed
by the G1000 SVS system.