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Section 3 Display Symbology
1
st
Ed Nov 2018
IDU-450 EFIS Software Version 8.0H (Rotorcraft)
3-13
Airspeed bug is parked in the direction of the difference if airspeed
off scale.
Figure 3-25: Airspeed Scale Bug
Table 3-6: Airspeed Bug Setting Annunciation and Bug Colors
Vertically Integrated Autopilot
Without Without
Airspeed
Bug Setting
White at all
times
Green when in airspeed climb or
descent mode otherwise white
Airspeed
Bug
Filled-white at
all times
Filled-white when in airspeed climb or
descent mode otherwise hollow-white
3.3.7. Airspeed Display (With EFIS-Coupled)
Airspeed descent to 1,900’ with green color and filled airspeed
Figure 3-26: Airspeed Display (with EFIS-Coupled)
When the ADC sensor fails, a black circle with red “X” is shown instead of
the airspeed readout, dial and pointer.
3.3.8. Heading
Display
NOTE:
The track pointer is not displayed when indicated airspeed is in the noise
range (indicated airspeed or groundspeed is less than 30 knots).