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GPWC - Advisory Inhibit Discretes



The GPWC sends three discretes to the TCAS computer. These discretes inhibit TCAS aural and visual warnings during all GPWS modes except mode 6 (altitude callouts).

Weather Radar

The TCAS computer gets one discrete from the weather radar. This discrete inhibits all TCAS aural warnings and changes RAs to TAs when the weather radar makes a predictive windshear warning.

Suppression Input/Output

The TCAS computer gets a suppression pulse when an ATC transponder or DME interrogator transmits. When the TCAS computer transmits, it sends a suppression pulse to the ATC transponders and the DME interrogators.

DEU - Display Status

A discrete from either DEU goes to the TCAS computer when the DEU loses the ability to show TCAS displays. When the TCAS computer gets this discrete, the TCAS computer does not do these functions:

· Send TCAS display outputs to the DEU

· Send TCAS aurals to the REU

· Transmit coordination data to traffic airplanes with TCAS.

REU - TCAS Aurals - Voice Outputs

The TCAS computer sends resolution advisory (RA) and traffic advisory (TA) aural signals to the remote electronic unit (REU). The REU amplifies the RA and TA aurals. Then it sends them to the flight interphone speakers and headsets to alert the flight crew.





Дата публикования: 2014-11-28; Прочитано: 362 | Нарушение авторского права страницы | Мы поможем в написании вашей работы!



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