PRIMUSr 1000 Integrated Avionics System
A28--1146--112--00
Electronic Flight Instrument System (EFIS)
4-34
D AttitudeSourceAnnunciation--Theattitudesource,eitherAHRS
1 or AHRS 2, is selected using the switches on the reversionary
control panel. These switches select the source for the attitude
display on the PFD. This display is always amber and it indicates
that the displayed attitude source is in reversion.
D MAX SPD/MIN SPD or Underspeed Warning -- When the flight
director detects an overspeed condition, a MAX SPD or MIN SPD
warning is displayed in amber to the left of the ADI. The warning
remains annunciated as long as the overspeed conditions exists.
D Airspeed Trend Vector -- The airspeed trend vector indicates the
airspeed in 10 seconds, if the current acceleration is maintained.
D Symbol Generator (SG) Source -- When an SG reversion mode
(SG1 or SG2) is selected on the system reversionary controller, the
source is annunciated in the upper left corner on both PFDs. An
amber SG1 indicates the No. 1 symbol generator (pilot’s side) is
driving all five displays. An amber SG2indicatesNo.2SG(copilot’s
side) is driving the displays.
NOTE: As a result of selecting SG reversion mode, allthe sensor
source annunciations (ADC, ATT, and so forth) are
annunciated, and the annunciation in amber.
D Windshear (WDSHEAR) Annunciation -- When the WDSHEAR
annunciation is displayed, it flashed for 10 seconds and goes on
steadily. An amber annunciation indicates caution, red indicates
warning.
D CAT2 (Category 2) ILS Annunciations -- The symbol generator
displays a green CAT2 category annunciator on the PFD. These
mode annunciations are located above the vertical deviation scale
as shown in figure 4--21.
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