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Section 3 Display Symbology
3-48
IDU-450 EFIS Software Version 8.0H (Rotorcraft)
1
st
Ed Nov 2018
Figure 3-78: Without State Borders Drawn
3.4.10. Terrain/Obstructions
Terrain and obstruction rendering is pilot-selectable to declutter the display
by deselecting terrain (
independent declutter of obstructions is not
possible
). Furthermore, terrain and obstruction rendering is disabled when:
1) The GPS/SBAS sensor is failed; OR
2) When the ADC is failed; OR
3) When the horizontal figure of merit exceeds the greater of 0.3NM or
the horizontal alarm limit for the mode of flight.
Figure 3-79: Terrain/Obstructions PFD