82002-PG-F
ST3400 TAWS/RMI PILOT’S GUIDE
PAGE 22
Pilot reactions to alerts and warnings differ according to weather
conditions, visibility, type of warning, phase of flight and aircraft
performance considerations. Pilots should be thoroughly familiar with
FAA, company, or other approved operational procedures as required by
their aircraft and type of operation.
The ST3400 is not the pilot or the pilot’s judgment; it is a display and
computer. However, because it is designed to only alert when the aircraft
is outside normal flight envelopes in relation to terrain, we recommend that
all alerts should result in immediate and appropriate action by the pilot. A
Warning should always result in an evasive maneuver. Please see the
section on Cautions and Warnings.
Note: If the ST3400 is interfaced to TCAS, the TCAS processor itself
generates the alerts and these are only displayed on the ST3400.
Coverage area of the database
The internal database of the ST3400 includes terrain, charted man-made
obstacles, and airports with runways greater than 2500 feet in length.
Obstacles are not shown discretely, but are included in the terrain cell
height. This means, for instance, that flat terrain with a charted broadcast
antenna may show the terrain cell containing the antenna as yellow when
all the surrounding terrain shows as green.
The terrain and airport database coverage is provided by geographical area.
Coverage is currently limited to those areas between 70
q
N and 70
q
S
latitude.
Obstacle data is included for most countries. Please contact Sandel for the
most current coverage information.
Note: There is no guarantee that every obstacle is charted or that every
charted obstacle is in the obstacle database.
Database updates
Updates to the coverage area database can be obtained on CD-ROM or
downloaded from the Sandel web site. They are used in conjunction with a
Sandel Data Loader program that runs on a laptop computer. The terrain
data is downloaded from the PC into the ST3400 through a USB port
located on the front right corner of the ST3400.
The coverage area database can be updated during normal maintenance to
the aircraft.
Note: The Sandel Data Loader program is compatible with Windows 98,
2000 and XP operating systems.
82002-PG-F
ST3400 TAWS/RMI PILOT’S GUIDE
PAGE 23
CHAPTER 5. OPERATIONAL OVERVIEW
During normal flight, terrain information and the active flight plan from
the GPS/FMS are presented on a full-color display.
Use [TOPO] or [TERR] Display Selection buttons to select the display that
is appropriate for current flight operations.
Use the Range Up/Down buttons to increase or decrease the range.
Use the view button to select a 360° FULL view or a 70° ARC view. The
distance to display ratio is maintained when toggling between FULL and
ARC.
