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Av. Kit Install. Manual
190-00067-02 Rev. J
Page 11
dissipating equipment can produce unacceptably high ambient air temperatures
around the unit. A 5/8 inch diameter air fitting is provided on the rear of the mounting
rack for the purpose of admitting cooling air under such conditions.
2.5 MINIMUM INSTALLATION REQUIREMENTS
Below is a list of required devices for A1 and A2 certification. Figure 1-3 shows
various equipment that can be used. For a specific list of equipment used in the
initial STC see GPN 190-00067-06. Deviations from this equipment should be
approved by the FAA or the governing organization.
Pressure Altitude Device
This device delivers pressure altitude data to the GNC 300. This data
can come from an encoder or serializer.
Manual Course Device
This device delivers the manual course selected to the GNC 300.
Course information can come from an analog resolver or from an EFIS
via the ARINC 429 bus or RS-422 bus.
HSI/CDI Device
This device displays Nav Flag, Left/Right and To/From. This can be
displayed on the EFIS or HSI.
External Annunciators and Switches
NAV Annunciator
GPS Annunciator
NAV/GPS Switch
HOLD Annunciator
AUTO Annunciator
GPS Sequence Switch
Approach Actv Annunciator (not required for A2)
Approach Arm Annunciator (not required for A2)
GPS Approach Switch (not required for A2)
Message Annunciator
Arrival Annunciator
The installer is advised to ensure that the switches and annunciators
are the functional equivalent to and perform at least as well as the
GARMIN devices used in the initial STC. The GARMIN switches and
annunciators are sunlight readable and in the primary view of the
pilot. Figure 2-3 shows what the GARMIN switch/annunciators look
like. For other information concerning switch/annunciators see the
Generic Airplane Flight Manual Supplement (190-00067-04) as well
as current FAA directives.
Qualified GPS Antenna
This antenna must be one of those listed in the accessories list.