TM 1-1510-225-10
3B-194
Figure 3B-151. Failure Indication Display
Figure 3B-152. Vertical Speed Indicator Failure
o. TCAS System Test. Self-test is initiated by
selecting TEST on the transponder/TCAS control
panel. While in the self-test mode normal operation of
the TCAS is suspended. On the self-test display in
Figure 3B -153, this test pattern is displayed on the
vertical speed/TCAS indicator for a few moments.
When the self-test is activated, it will also cause
transponder self-test indications on the control panel.
The squawk code digits display all 8's and the FAIL
indicator lights momentarily. If the TCAS system
