1.2.7 Coverage area of the databases
The internal databases of the ST3400 contain terrain including charted man-made
obstacles, and airports with runways greater than 2500 feet in length or as
indicated in the airport database notes. Obstacles are not shown discretely, but are
included in the terrain cells. 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 databases are provided by geographical area. The
coverage area of the database installed in the ST3400 is shown as part of the sign-
on screen after a power cycle.
Obstacle data from North America and Europe is currently incorporated in the
respective terrain databases. Additional obstacle data will be included as more
obstacles become charted and information becomes available.
Remember, there is no guarantee that every obstacle is charted or that every
charted obstacle is in the terrain data.
1.2.8 Keeping the databases current
Updates to the coverage area databases can be obtained on CD ROM from Sandel
or downloaded from the Sandel web site into a Windows loader program on a
laptop computer. The terrain data and/or airport data is then downloaded from the
PC into the ST3400 through a high-speed USB port located on the front right
corner. Loading instructions are supplied along with the applicable database.
The databases can be updated during normal maintenance to the aircraft.
Note: since USB is not supported in Windows-95, only Windows-98 (and later)
Microsoft operating systems are supported.
1.3 Technical Specifications
The following section describes the technical characteristics, which include the
appliance approval basis, physical and electrical properties, electrical connector
pin allocation which details function and gradient or equipment protocol, and
ARINC label support. Also included is the description of the ST3400 installation
components, other equipment and installation requirements. A review of the
installation approval procedures is provided for filing with authorities.
1.3.1 Approval Data
Technical Standard Order:
TSO-151b (Class A/Class B) *
TSO-C113
Software Certification:
DO-178B
Environmental:
DO-160D
Databases:
DO-200A
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