User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
TCAS 3000 Traffic Alert and Collision Avoidance System
34−43−23
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Page 2−5
15 Dec 2005
When you install ATC antennas, the mounting area must provide a solid mechanical
base for the antenna as well as clearance for the connector. A doubler plate is
usually required when the antenna is mounted on an unsupported large fuselage
area. Never weaken aircraft structure for the sake of a good location. Refer to the
aircraft manufacturer’s specifications; reinforcements for antennas are often built into
the aircraft structure.
Doubler plates or shims, if used, must be metallic and shaped to interface the
antenna base with the contour of the aircraft fuselage. ATC antennas are not
supplied by ACSS. All antenna installations should be in accordance with
manufacturer installation instructions.
A weather sealant should be applied around the periphery of the antenna base to
prevent seepage of water and condensation and preclude corrosion. If a sealant or
aerodynamic smoother is used, it should be applied after the antenna has been
bolted down.