User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL

CAS/Part No.9005000

Figure 1-23: Excessive Bank Angle Envelope

The CPA mode of operation provides medium-term (caution) and short—term

(warning) alerts to inform the crew that the flight path they are following is

hazardous due to the presence of terrain/obstacles ahead. The objective of the

CPA function is to warn the crew of an impending controlled flight into

terrain/obstacles with sufficient time for them to assess the situation and safely

avoid the terrain/obstacles hazard. All CPA predictions are based on the

assumption that the operational escape maneuver in case of a terrain/obstacles

hazard will be a “pull up” evasive action. CPA predictions model a conservative

pull up escape maneuver based on current aircraft climb capability.

The T

CAS CPA function provides alerts in the following CFIT situations:

● Hazardous descent rate with respect to terrain/obstacles

● Hazardous closure rate with respect to terrain/obstacles

● Hazardous terrain/obstacles ahead situation during turns

● Hazardous high terrain/obstacles ahead situation that cannot be cleared by a

pull up maneuver.

(5) RWS Operational Mode

NOTE:

The FMO “Windshear Enable” and the TAWS function must be

enabled in order for the RWS function to activate. TAWS is

enabled via program pin RTP-11H.

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

Pub. No. 8600200-001, Revision 004

34-45-29

1-91

04 Nov 2014

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