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The no-bearing RA and TA messages show on the ND when
TCAS loses the bearing of the RA or TA traffic. The bottom
directional antenna becomes an omnidirectional antenna when
the landing gear is down. When this happens, the bottom
antenna cannot find the bearing of the intruder traffic. The
bearing is NCD. Because of this, the no-bearing messages show on the ND.
If a TA becomes no-bearing traffic, an amber TA with the range, altitude, and vertical motion arrow shows on the ND. If an RA becomes no-bearing traffic, a red RA with the range, altitude, and vertical motion arrow shows on the ND. Only two nobearing traffics may show.
Дата публикования: 2014-11-28; Прочитано: 635 | Нарушение авторского права страницы | Мы поможем в написании вашей работы!