Failure Conditions; Radio Altimeter - Honeywell Bendix/King KTA970 Pilot's Manual

KTA 970/KMH 980 Pilot's Guide TCAS I Appendix
At the conclusion of a successful Self Test, a synthesized voice
announces:
"TCAS SYSTEM TEST OK"

FAILURE CONDITIONS:

Should a failure be detected during self test, the audio message says:
"TCAS SYSTEM TEST FAIL"
A "TCAS" flag will be annunciated on the traffic display. A self test fail-
ure may indicate that the auxiliary equipment required for TCAS I is not
operational. Check the associated equipment.
Should a display failure be detected at any time, the Display Fail flag will
appear on the KMD 550/850. A "Display Fail" flag is not caused by the
TCAS I processor.

RADIO ALTIMETER

If RALT is installed and is inoperative, TCAS I will be Inoperative.
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