SkyView SE
Pilot’s User Guide
- Revision B
4-5
GPS Assist
In the event of airspeed loss (due to icing or other blockage) an accurate attitude is maintained
if there is an accurate GPS ground speed source.
When in this mode, a magenta GPS ASSIST
message is displayed on the PFD and the ground speed is displayed below the indicated
airspeed (IAS). If the connectivity with the GPS fails while in GPS assist mode, the attitude
continues to be displayed, using the last known GPS ground speed as a reference. This mode is
flagged on the horizon with a yellow CROSS CHECK ATTITUDE message. In the very rare case
that this sequence of events occurs, the
ADAHRS’ attitude accuracy is reduced; use other
references in the aircraft to cross-check against the SkyView display.
Note that due to a limitation of the SV-GPS-250 and SV-GPS-2020 hardware, it cannot be used
for GPS Assist above 415 knots ground speed if it is being used as the GPS source
Altimeter
The altimeter is displayed on the right side of the PFD. It
incorporates an altitude tape and digital readout, Density
Altitude (DA), barometer setting, and altitude bug. Figure 14 is an
example SkyView altimeter.
The altitude tape displays 200 units above and below the current
altitude digital readout. Each tick represents 25 units, with every
50 unit tick drawn slightly longer to differentiate them. Units can
be set to feet or meters. Reference the SkyView / SkyView SE
System Installation Guide instructions on how to change the
displayed units.
The digital readout scrolls up and down in the manner of an
analog altimeter. The rate of change of the digits provides a
sense of the increase or decrease in altitude.
An altitude trend indicator based on current vertical speed is
represented as a magenta bar on the altimeter. It grows
proportionally as your climb or descent rate increases/decreases.
The altitude trend indictor is scaled to indicate a 6-second
altitude trend. This means that if current rate of altitude change
is kept constant, the altitude will end up at the number indicated
at the end of the trend line after 6 seconds have passed.
DA will display “
----
”
if an OAT probe is not connected to the SkyView ADAHRS module. Since
relative humidity is not readily available to SkyView in flight, density altitude is calculated using
an approximation. The results of SkyView’s DA computation will closely match a tradi
tional
handheld E6B.
Barometer Setting
To change the barometer setting:
1.
Enter the Joystick Function Menu.
Figure 14
–
Altimeter
