Page 2-6
GA 35, GA 36, and GA 37 Antenna Installation Instructions
Rev. F
190-00848-00
2.4
Antenna Installation
Refer to the aircraft manufacturer’s specifications and AC 43.13-2B, Chapter 3 for appropriate guidance
on antenna installation.
1.
Refer to Appendix A for the appropriate mounting cutout. Drill or punch the mounting holes as
necessary.
2.
Install a doubler plate to reinforce the aircraft skin, as necessary.
3.
Secure the O-ring in the O-ring groove on the underside of the antenna.
4.
Place antenna over mounting holes, using the fours screw holes to align the antenna. Insert the
supplied four screws.
5.
Washers and locking nuts (not provided, may be part of doubler plate) are required to secure the
antenna Using the supplied screws or equivalent, torque should be evenly applied across all mounting
screws to avoid deformation of the mounting area. Do not over tighten screws.
Antenna
Mounting Screws
Torque Specifications
GA 35
MS24693-C
8-32 Stainless Steel
12
– 15 inch-pounds
GA 36
GA 37
MS24694-C
10-32 Stainless Steel
20
– 25 inch pounds
CAUTION
GA 35 serial numbers below 110000 required screws with 80 degree countersink angle
and most aviation fasteners (AN509) are NOT compatible. Serial numbers 110000 and
higher, AN509 hardware is compatible. Antennas installed with incompatible hardware
or screws that have been over tightened will void antenna warranty.
6.
Ensure that the antenna is electrically bonded as described in Section 2.3.2.
7.
Seal the antenna 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 ensure
that the antenna connectors are not contaminated with sealant.
CAUTION
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.
2.5
Installation Approval
Installation of any antenna should follow the aircraft TC or STC requirements.
Summary of Contents for GA 35
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