Installation; Introduction; Unpacking And Inspecting Equipment; Antenna Installation - Garmin GTX 327 Installation Manual

2.

INSTALLATION

2.1

INTRODUCTION

This section provides the necessary information for installing the GTX 327 Transponder, and where
required, optional accessories. Installation of the GTX 327 will differ according to equipment location
and other factors. Cabling will be fabricated by the installing agency to fit these various requirements.
This section contains interconnect diagrams, mounting dimensions, and information pertaining to
installation. Any deviations from the installation instructions prescribed in this document shall be
accomplished in accordance with the requirements set forth in FAA AC 43.13-1B and AC 43.13-2A.
2.2

UNPACKING AND INSPECTING EQUIPMENT

Carefully unpack the equipment and make a visual inspection of the unit for evidence of damage incurred
during shipment. If the unit is damaged, notify the carrier and file a claim. To justify a claim, save the
original shipping container and all packing materials. Do not return the unit to Garmin until the carrier
has authorized the claim.
Retain the original shipping containers for storage. If the original containers are not available, a separate
cardboard container should be prepared that is large enough to accommodate sufficient packing material
to prevent movement.
2.3

ANTENNA INSTALLATION

2.3.1 Location Considerations

A. The antenna (Garmin P/N 010-10160-00) should be well removed from any major
protrusions, such as engine(s), propeller(s), and antenna masts. It should also be as far as
practical from landing gear doors, access doors, or other openings that could effect its
radiation pattern.
B. The antenna should be mounted on the underside of the aircraft and in a vertical position
when the aircraft is in level flight.
C. Avoid mounting the antenna within three feet of the ADF sense antenna or any other
communication antenna and six feet from the DME antenna.
D. To prevent RF interference, the antenna must be physically mounted a minimum distance
of three feet from the GTX 327.
If the antenna is being installed on a composite aircraft, ground planes must sometimes be
added. Conductive wire mesh, radials, or thin aluminum sheets embedded in the composite
material provide the proper ground plane allowing the antenna pattern (gain) to be
maximized for optimum transponder performance.
2.3.2 Antenna Installation
A. Install the antenna according to the antenna manufacturer's instructions and
FAA AC 43.13-1B and AC 43.13-2A.
GTX 327 Installation Manual
190-00187-02
NOTE
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