Round Dials
RD-4
IDU-450 EFIS Software Version 8.0H (Rotorcraft)
1
st
Ed Nov 2018
Figure RD-7: Altitude Display (When Below Sea Level)
Figure RD-8: Airspeed and Altitude with Loss of ADC
Altitude sub-mode user-selectable triangular
target altitude bug shown here at 4,400’. The
bug is limited to -1,000’ up to the service ceiling
and is removed when more than 500’ away
from current altitude.
Figure RD-9: Target Altitude Bug
The target altitude bug can be used as a visual reference or when vertically
integrated with the Genesys HeliSAS-E or other autopilot, the bug
characteristics indicate the following modes:
1) Filled-white when in altitude hold mode.
2) Hollow-white when in a climb or descent mode.
3) Filled-white during altitude hold capture.
When not vertically integrated with the Genesys HeliSAS-E or other
autopilot, the target altitude bug is filled-white at all times.