b. Requirements.
1. In order to use TIS, the client and any intruder
aircraft must be equipped with the appropriate
cockpit equipment and fly within the radar coverage
of a Mode S radar capable of providing TIS.

Typically, this will be within 55 NM of the sites
depicted in FIG 4-5-5, Terminal Mode S Radar Sites.
ATC communication is not a requirement to receive
TIS, although it may be required by the particular
airspace or flight operations in which TIS is being
used.

FIG 4-5-4

TIS Proximity Coverage Volume

FIG 4-5-5

Terminal Mode S Radar Sites

Surveillance Systems

4-5-9