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--73
(2) RWS Operational Mode
Whenever wind factors cause aircraft performance to decrease to a predetermined
level, an audio warning is sounded, indicating to the crew that the aircraft net
performance capability is deteriorating and rapidly approaching a critical state. In
addition to the warning, the Windshear Warning algorithm provides a caution when
an increasing--performance Windshear is detected, thus giving advance warning of
decreasing -- performance windshear. Figure 1-- 25 illustrates reactive windshear
detection.
Figure 1--25. Windshear Detection
(3) TAWS Display Symbology
The terrain hazard display function generates an image that provides the following
informa tion to the flight crew:
• A Terrain Display Background consisting of shaded areas representing terrain at
different altitudes relative to the aircraft altitude
• An Alert Line depicting the point or points where a CPA caution will occur if the
aircraft continues on its current trajectory