CREW
AWARENESS
AIRPLANE
OPERATIONS
MANUAL
2-04-13
Page
18
Code
01
REVISION 39
AOM-145/1114
COMPASS ARC DISPLAY
1 - HEADING SOURCE ANNUNCIATOR
− When the cross-side heading source is selected, or when the
AHRS is in DG mode, the heading source annunciator (FHDG)
is displayed.
− When the AHRS is in DG mode, the on-side heading source
annunciators are DG1 or DG2 (in white). When the magnetic
heading is invalid, the source annunciator is HDG1 or HDG2 (in
amber).
2 - FMS MESSAGE AND STATUS ANNUNCIATORS
− The FMS message annunciator (MSG, in amber) is displayed in
amber and flashes until the FMS condition is cleared.
3 - WEATHER RADAR MODE ANNUNCIATOR
The mode annunciators are described below:
ANNUNCIATOR COLOR R/T MODE
FPLN green Flight plan mode.
FSBY green Forced standby.
GMAP green Ground mapping mode.
R/T green RCT and turbulence (1).
RCT green REACT Mode.
STBY green Standby.
TEST green Test mode and no faults.
TGT green Target alert enabled (2).
TX green
WX is transmitting but not selected for
display, or in STBY or FSTBY (3).
WAIT green RTA in warm-up (4).
WX green Weather mode (1).
WX/T green Weather and turbulence (5).
FAIL amber RTA Fail - test mode and faults (6).
GCR amber
Normal WX with ground clutter
reduction.
STAB amber Stabilization off.
VAR amber Variable gain.
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