Radio Altitude (Ra) Decision Height Annunciator; Marker Beacon; Marker Beacon Annunciations; Radio Altitude Display - Honeywell PRIMUS 1000 Pilot's Manual

Radio Altitude (RA) Decision Height Annunciator -- When actual
D
radio altitude decreases to within 100 feet of the set value, a box is
placed in the lower right corner of the attitude sphere. When the
actual radio altitude is equal to or less than the set value, and amber
MIN is placed in the box and it flashes for 10 seconds.
Marker Beacon -- The marker beacons are displayed in the lower
D
right corner below the attitude sphere. When active, each beacon
annunciation (O, M, or I) is displayed in a white box that flashes at
the proper rate. The beacon symbol colors are listed in table 4--8.

Marker Beacon

Outer
Middle
Inner
Radio Altitude Decision Height Set Data -- The RA set data is
D
located in the lower right corner of the attitude director indicator
(ADI).
The range for radio altitude set is 0 to 999 feet. The minimum altitude
value can be set within 10 feet above 200 feet above ground level
(AGL), and within 5 feet below that value. Above 999 feet AGL, the
set data is removed.
Radio Altitude Display -- The radio altitude is displayed as a green
D
digital display, ranging from --20 feet to +2550 feet, surrounded by
a white box, and located at the bottom of the ADI sphere. For ranges
greater than 2550 feet, the boxed RA digital display is removed. It
is also displayed for low altitude awareness on the barometric
altitude tape as a rising ground brown raster. The input for the radio
altitude display is from the radio altimeter.
For an invalid radio altimeter, the digits are replaced with an amber
boxed --RA--.
Comparison Monitor Annunciation -- A variety of comparison
D
monitor annunciations are displayed in various locations on the
PFD. They are described later in this section.
A28--1146--112--00
PRIMUSr1000 Integrated Avionics System
Symbol
O
M

Marker Beacon Annunciations

Table 4--8
Electronic Flight Instrument System (EFIS)
Symbol Color
I
Blue
Yellow
White
4-33