User's Manual Part 1

T
2
CAS / Part No. 9000000
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
34-43-20
15 Feb 2003
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1--68
• Set TCAS/XPDR mode selector to TA/RA
• Set TA/DSPLY to AUTO
• Set ALT/RPTG to 1 or 2.
(c) TCAS Mode Deactivation
After clearing the runway following landing, set the TCAS/XPDR mode selector
to STBY to disable Mode S communication.
Figure 1--18. TCAS ll Display Test Pattern
B. TAWS/RWS Operation
The p rincipal modes of operation and display features of the TAWS/RWS function are
discussed in the paragraphs that follow. In--flight procedures with display examples are
contained in the T
2
CAS Pilot’s Manual, ACSS Publication No. 8000264--001.
(1) TAWS Operational Modes
The T
2
CAS TAWS function provides both conventional GPWS and Collision
Prediction & Alerting (CPA) modes of operation.
The conventional GPWS modes of operation are as follows:
(a) Mode 1: Excessive Rate of Descent with respect to Terrain
When the CPA mode is inoperative, this mode provides, as defined in RTCA
DO -- 161A, a reactive medium--term caution and a reactive short-- term warning
when the current flight path is descending toward the terrain ahead of the aircraft
at an excessive rate. Figure 1--19 shows Mode 1 -- Excessive Descent Rate
Envelope.