Installation Instructions

190-01007-A3 GTN 6XX/7XX AML STC Installation Manual
Rev. 4 Page 2-13
2.4.1.3 IFR Installation of a GTN 650/750
For an IFR installation of a GTN 650 or GTN 750, the criteria in Section 2.4.1.1 must be met in addition
to the following:
• If the GTN is installed for GPS primary navigation, then the GTN must be interfaced to a
navigation indicator installed in the pilot’s primary field-of-view (or in the aircraft manufacturer
approved mounting location). The indicator must have a vertical deviation indicator (GS) in order
to perform approaches with vertical guidance. EFIS, EHSI, and NAV Indicators approved by this
STC are listed in Appendix C.
• If the GTN does not meet the field-of-view requirements outlined in Section 2.4.10, then remote
source selection annunciators must be installed. The GTN provides these annunciations if
mounted within the required field of view.
• A second GPS navigator (Garmin or non-Garmin) is required if the aircraft requires GPS coaxial
cable overbraid (reference Appendix G).
• Either a second GPS navigator (Garmin or non-Garmin) or a separate VHF navigation radio
(Garmin or non-Garmin) is required in the following installations:
o Aircraft with a maximum certified gross takeoff weight of greater than 6000 pounds.
o Aircraft that are turbine-powered.
o Multi-engine aircraft.
o Installations in which a CDI is connected to connector P1004 pin 29 (Reference Figure E-9,
Figure E-10, and Figure E-11), and there is no other way of displaying VHF navigation
deviation information from the GTN 650/750. This is not required for installations which
have a CDI or HSI connected to the Main connector P1001, which can be switched to
output either GPS or VHF navigation information.
For installations meeting these requirements, use the Airplane Flight Manual Supplement for Garmin
GTN 6XX/7XX GPS/SBAS Navigation System (P/N 190-01007-A2).
2.4.2 GTN External Sensors and Devices
When the GTN is interfaced to external sensors, these sensors must be installed in accordance with the
sensor manufacturer's data. See Appendix C for a list of sensors approved to interface with the GTN. This
manual does not provide data for the installation mounting or approval of any external sensors or devices.
The GTN can accept data from multiple sources. If multiple sources are used, the GTN will accept data as
described below. The input priority of each external data source cannot be configured. If available, ensure
that the higher priority sources are connected to the GTN.