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1.5
Antenna Installation
a. Refer to Appendix A for the appropriate mounting cutout. Drill or punch the holes.
b. Install a doubler plate to reinforce the aircraft skin, as required.
c. Place install gasket, Garmin part number 253-00002-00, on top of aircraft skin using the four
screw holes to align the gasket.
d.
Washers and locking nuts are required to secure the antenna. Torque the four supplied #8-32
stainless steel nylon locking nuts (Garmin part number 210-10004-09, or equivalent) evenly
across all mounting studs to avoid deformation of the mounting area.
e.
Insure that the antenna base and aircraft skin are in continuous contact with the gasket.
f.
Seal the antenna and gasket to the fuselage using a good quality electrical grade sealant. Run a
bead of the sealant along the edge of the antenna where it meets the exterior aircraft skin. Use
caution to insure that the antenna connectors are not contaminated with sealant.
Do not use construction grade RTV sealant or sealants containing acetic acid. These
sealants may damage the electrical connections to the antenna. Use of these type sealants
may void the antenna warranty.
GA 56W Antenna Installation Instructions
190-00483-01
CAUTION
Page 1-3
Revision D
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