User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
TCAS 3000 Traffic Alert and Collision Avoidance System
34−43−23
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Page 1−26
15 Dec 2005
An O−ring (included with the directional antenna) is required to be installed between the
directional antenna and the aircraft fuselage. The Navy Aeronautical Standard part
number for the O−ring is NAS 1611−240. The ACSS part number for the O−ring is
4000171−240.
NOTE: For directional antennas, ACSS Part No. 7514060−90X, the customer must
provide an adapter plate for mounting to the aircraft. For details of the antenna
base plate, to which the adapter must mate, refer to Section 2. Directional
antennas, ACSS Part No. 7514081−9XX, come with a preinstalled adapter plate.
The average unit weight of an antenna with adapter plate is approximately 3.0 pounds.