Garmin Bell 407 GTN Benutzerhandbuch - Seite 18
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radar altimeter is interfaced with the GTN then VCOs are provided based on
radar altitude and an additional VCO is provided at 50 feet above ground. If no
radar altimeter is interfaced with the GTN then VCOs are provided based on
GPS altitude above terrain and no 50 foot call is available. Selecting the altitude
above ground at which VCOs begin is accomplished using the Audio button
under the Systems page.
ALERT ACKNOWLEGE
The Alert Acknowledge function is used to mute an active HTAWS caution or
when operating in RP Mode to muffle an active HTAWS warning. Muting of a
caution will last for the duration of the caution alert. Muffling of an RP Mode
warning will last 10 seconds at which time the pilot may elect to re-muffle the
alert.
HTAWS ANNUNCIATORS
When HTAWS is installed, HTAWS Mode and Status annunciations are
provided at the lower left corner of the HTAWS enabled GTN unit. In addition,
HTAWS Mode and Alert annunciators external to the GTN will be present.
If an optional G500H system is installed in the helicopter then all HTAWS
mode and status annunciators from the GTN will be provided on the Primary
Flight Display of the G500H.
If no G500H system is installed, then two HTAWS mode and status
annunciators from the GTN will be installed in the eyebrow panel adjacent to
the aircraft annunciator panel. One annunciator provides visual alerts for
HTAWS warning (red) and caution (yellow) conditions. The second
annunciator indicates whether HTAWS protection is being provided by means
of a dual color HTAWS N/A indication. When HTAWS N/A is illuminated in
amber HTAWS protection is not being provided as the result of either a system
failure or loss of a required input. When HTAWS N/A is illuminated in white
HTAWS protection is not being provided as the result of either automatic
inhibiting below 30 knots groundspeed or pilot inhibiting of HTAWS alerting.
Traffic System (Optional)
Traffic may be displayed on the GTN when connected to an approved optional
TCAS I, TAS, or TIS traffic device. These systems are capable of providing
traffic monitoring and alerting to the flight crew. Traffic shown on the display
may or may not have traffic alerting available.
Garmin GTN 6XX or GTN 7XX Cockpit Reference Guide or Garmin GTN
6XX or GTN 7XX Pilot's Guide provides additional information regarding the
functionality of the traffic device.
190-01007-J4 Rev. 1
RFMS, Bell 407 GTN GPS/SBAS System
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