What are the aural annunciation inhibit features of the KTA-870 / KMH-880 Traffic Advisory Systems?
Within the Bendix/King KTA-870 and KMH-880, the processor will inhibit the aural annunciation of traffic alerts in the following order of precedence:
1. The aircraft is below 400 feet AGL if equipped with radio altimeter.
2. When the landing gear of the aircraft is extended (no radio altimeter installed).
For installations in fixed gear aircraft, the aural annunciation is never inhibited by the TAS processor. In addition, the aural annunciation is enabled above 600 AGL in aircraft equipped with a radio altimeter.