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Section 2 System Overview
2-38
IDU-450 EFIS Software Version 8.0H (Rotorcraft)
1
st
Ed Nov 2018
These type of alerts are used where the pilot and copilot systems can
generate different alerts, such as when the pilot and co-pilot systems are
not crossfilled and are operating on different FMS flight plans.
Table 2-12: Side-Specific Advisory Alerts
Visual Alert
Alert Tone Condition
** No time delay
Chime
Ascending through transition level:
Altimeter not set to 29.92 inHg or 1013
mbar.
Descending through transition level:
Altimeter set to 29.92 inHg or 1013
mbar. Descent warning times out in 10
seconds.
Disabled during QFE operation.
2-second time delay.
Chime
GPS/SBAS actual navigation
performance in nautical miles based
upon current GPS/SBAS HPL. Value
ranges from 0.01 to 15.0 NM.
Chime
GPS/SBAS automatic required
navigation performance in nautical
miles as acquired from navigation
database. Value ranges from 0.01 to
15.0 NM.
Chime
GPS/SBAS manual required
navigation performance in nautical
miles as set by pilot. Value ranges
from 0.01 to 15.0 NM.
Chime
GPS/SBAS in dead reckoning mode
with valid ADC and AHRS data. Timer
shows time since loss of position
(mm:ss) to indicate quality of DR
solution. Valid range is from 00:00 to
59:59. Inhibited during and for 10
seconds after unusual attitude
mode.**
Chime
GPS/SBAS in LNAV approach
mode.**
Chime
GPS/SBAS in LNAV/VNAV approach
mode. **
Chime
GPS/SBAS in LP approach mode. **
Chime
GPS/SBAS in LPV approach mode.**