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System Outputs; Options - Honeywell EGPWS MK V Pilot's Manual

Enhanced ground proximity warning system
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The EGPWS provides both audio and visual outputs.
Audio outputs are provided as specific alert phrases, and
altitude callouts or tones provided by an EGPWS speaker and
via the cockpit Interphone system for headset usage. Several
audio output levels are available. They are established during
the installation of the EGPWS. These EGPWS audio outputs
can be inhibited by other systems having higher priority (i.e.,
windshear) or cockpit switches in some cases. The EGPWS
also has the ability to inhibit other system audio outputs such
as TCAS.
Visual outputs provide discrete alert and status annunciations,
and display terrain video when a compatible display system is
available and enabled. The discrete visual alerts coincide with
audio caution and warning alerts to achieve an optimum
terrain alerting capability. Status annunciations provide
information to the flight crew about the status of the EGPWS
(e.g., GPWS INOP) or activation of selected functions.
Terrain video is generated by the EGPWC based on the
aircraft's current position relative to the surrounding terrain.
This video is presented to a Weather Radar indicator, EFIS
display, or a dedicated display unit.


The EGPWC uses program pin discrete inputs to define the
installation configuration and option selection. Software upgrades
(Reloadable Customer Definitions (RCD)) are also available for
been designed for maximum flexibility while being tailored to
specific aircraft equipment, sensors, and displays. The following
list summarizes available Operator options (excluding sensor and
equipment configuration options):
• RAAS – Provides audio-only advisories and caution alerts of
• Flashing Lamps – When selected causes alert annunciators to
• TAD and TCF Disable – Suppresses all TAD and TCF
• Altitude Callouts – Selects desired altitude callouts from a
• Audio Output Level – Selects desired audio output level
• Alternate Mode 6 Volume – Selects reduced Mode 6 volume
System Description
position during ground operations and approach to landing. In
-230-230 software, an option was added to overlay RAAS
Visual messages on the dedicated Terrain display.
flash when active.
alerting and display functions.
menu of options.
High, Medium, or Low.
(-3 dB).
Mark V and Mark VII EGPWS Pilot's Guide
functions. The EGPWS has
Rev H, August 2011


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