When a GDL 88 and TAS/TCAS system are integrated, the GDL 88 controls the mode of the TAS/TCAS system using the air/ground logic in the GDL 88, as well as from the mode controls available on the interfaced display.
4.2.3No-Heading Source Traffic Information
When a GDL 88 and TAS/TCAS are integrated in an airplane without a heading source, they are subject to certain limitations:
•While on the ground, display of TCAS traffic and
•TCAS (heading referenced traffic) and
•Traffic is not displayed on the moving map with ground features depicted.
Traffic will always be available for display on the traffic page.
4.2.4Conflict Situational Awareness (CSA)
Conflict Situational Awareness is an alerting algorithm that provides TCAS-
like Traffic Alerts on
The GDL 88 issues an aural alert when a Conflict Situational Awareness (CSA) alert is displayed:
As in some TCAS I TA implementations, altitude above terrain is used to adjust the sensitivity of the CSA algorithm to minimize nuisance alerts. Radar Altitude (if available), Height Above Terrain (as provided by a GNS or GTN navigator with a terrain database), and Geodetic Altitude are used to adjust the sensitivity of the CSA algorithm.
Radar Altitude (if available), Height Above Terrain (if available), and Geodetic Altitude are used to adjust the sensitivity of the CSA algorithm, in accordance with the following table:
GDL 88 |
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