IFD400 Series Pilot Guide
6-2 General
CREW ALERTING SYSTEM (CAS) / ALERTS
See the individual aircraft Pilot Operating Handbook (POH)
Supplement for any limitations with respect to IFD operations.
A crew alerting system (CAS) has been included in this system.
There are four levels of message alerting:
Warnings (Red)
Immediate action should be performed
Cautions (Yellow)
Immediate attention should be applied
Advisories (Cyan)
A change in system state that may require attention
Notices (Green)
An event occurred that may require attention when it’s
convenient
MASTER CAUTION LAMP
A “Master Alert” system has been created where any active
caution or warning will cause the bezel “AUX” button to be lit
using the color of the highest level alert. Each time a new alert is
issued, the AUX button will flash the corresponding color until
either it is acknowledged by the pilot or the condition goes away.
When there is at least one active alert, the AUX button will stay lit
with the color corresponding to the active alert with the highest
level. If the AUX page is already the current page, then the AUX
lamp stays green and the ALERT tab will be colored according to
the alert with the highest level. Note that if there is an active alert
and a new alert of a lower priority becomes active, the master
indication color will not change (e.g. a new advisory will not cause
the AUX button or the tab color to change from red to yellow).
For those aircraft that have a remote annunciator panel installed,
the IFD will trigger a “MSG” lamp or its equivalent on the remote
annunciator unit for each new caution and warning.
In all cases, basic airmanship should be exercised and
fundamentals utilized such as maintain aircraft control, analyze
the situation, and take proper action.
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