PRIMUS
r
1000 Integrated Avionics System
A28--1146--112--00
4-31
Electronic Flight Instrument System (EFIS)
D
Low Altitude Awareness Display
-- Low altitude awareness is
displayed on the barometric altitude tape. At 550 feet AGL, a rising
ground brown raster, topped with a yellow horizontal line, that
represents 0 feet AGL, starts rising from the bottom of the altitude
tape. The rising brown raster displaces the normal gray raster field
and altimeter scale data. At a radio altitude of zero feet, the entire
lower half of the altitude tape is shaded brown.
If either radio altitude or barometric altitude is invalid, the low altitude
awareness raster and the yellow horizontal line are removed.
D
Aircraft Symbol
-- The aircraft symbol is a stationary
representation of the aircraft. Aircraft pitch and roll altitudes are
displayed as the relationship between the aircraft symbol and the
ADI sphere. The aircraft is flown to align the command cue to the
symbol to satisfy FD commands.
D
Low Bank Arc
-- When BNK is selected on the guidance controller,
a
±
14
°
green roll arc is displayed on the ADI roll scale.
D
Flight Director Couple Arrow
-- A green arrow is displayed above
the ADI to indicate which PFD is coupled to the flight guidance
system.
D
PFD Source Annunciations
-- The PFD annunciates the following
sources of display:
-
AHRS attitude (ATT)
-
Micro air data computer (MADC)
-
AHRS and heading (MAG/DG)
When the normal (on--side) source is selected, the source
annunciations are suppressed. The on--side is defined in table 4--6.
If the normal source is not selected, these annunciations are
normally white, but they turn amber on both displays when the pilot
and copilot are on the same source.
Sensor
Pilot PFD
Copilot PFD
Attitude
ATT1
ATT2
MADC
ADC1
ADC2
Heading
MAG1
MAG2
On--Side Sensor Sources
Table 4--6
