Garmin 010-00230-30 Kurulum Kılavuzu - Sayfa 12

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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

Install the antenna according to the antenna manufacturer's instructions and FAA AC 43.13-2A.

2.3.3 Installation Approval Considerations for Pressurized Aircraft

Antenna and cable installations on pressurized cabin aircraft require FAA approved installation design and

engineering substantiation data whenever such installations incorporate alteration (penetration) of the cabin pressure

vessel by connector holes and/or mounting arrangements.

For needed engineering support pertaining to the design and approval of such pressurized aircraft antenna

installations, it is recommended that the installer proceed according to any of the following listed alternatives:

1. Obtain approved antenna installation design data from the aircraft manufacturer.

2. Obtain an FAA approved Supplemental Type Certificate (STC) pertaining to and valid for the subject

antenna installation.

3. Contact the FAA Aircraft Certification Office in the appropriate Region and request identification of FAA

Designated Engineering Representatives (DERs) who are authorized to prepare and approve the required

antenna installation engineering data.

4. Obtain FAA Advisory Circular AC-183C and select (and contact) a DER from the roster of individuals

identified thereunder.

5. Contact an aviation industry organization such as the Aircraft Electronics Association and request their

assistance.

Page 2-2

Rev. 1

NOTE

GTX 330 Installation Manual

190-00207-02