Rev 2
KTA 970/KMH 980 Pilot’s Guide
006-18273-0000
TCAS I Appendix
30
TCAS I SELF TEST
The TCAS I self test determines the operational status of the entire TCAS I
system. Select self test on the KMD 550/850. Once begun, self test con-
tinues automatically for approximately eight seconds. During self test, nor-
mal TCAS I operation is inhibited. For optimum display during self test,
selection of the 5 nm range is recommended.
During the first few seconds of the test sequence, the traffic display
allows verification of each type of Intruder symbol. The test generates
the symbols arranged as shown. The traffic display annunciates the
phrase “TCAS TST”.
Use of the TCAS I self test function in flight will inhibit normal
TCAS I operation for up to 8 seconds. For this reason, the pilot
should use caution when initiating the test in flight.
KMD 550/850 TCAS I Test Pattern; 5NM range
A Traffic Advisory (yellow circle) will appear at 9 o’clock, range of 2
miles, 200 feet below and climbing.
Proximity traffic (solid white diamond) will appear at 1 o’clock, range 3.6
miles, 1000 feet below, descending.
Non-Threat traffic (open white diamond) will appear at 11 o’clock, range
of 3.6 miles, flying level 1000 feet above.
