34-44-00 TRAFFIC COLLISION AND AVOIDANCE SYSTEM Back
A. System Function
The Traffic Collision and Avoidance System (TCAS) lets the flight crew know of possible airspace danger from other aircraft.
B. System Components
The primary components of the system are the TCAS:
C. System Operation
(1) The system receives external data from other aircraft transponders. It uses this data to calculate the range, the closing rate, and the bearing of the other aircraft. The system also receives altitude data from the other aircraft that are reporting altitude. From this data, the system calculates possible collision dangers (from the other aircraft) and tells the flight crew of the necessary avoidance measures that have to be taken.
(2) TCAS can only interrogate aircraft that are fitted with Air-Traffic Control Radio-Beacon System (ATCRBS) transponders (Mode C or A/C) or mode S transponders.
The Traffic Collision and Avoidance System (TCAS) lets the flight crew know of possible airspace danger from other aircraft.
B. System Components
The primary components of the system are the TCAS:
- Processor (Ref. Fig. 1)
- Configuration module (Ref. Fig. 2)
- Upper-directional antenna and lower omni-directional antenna (Ref. Fig. 3)
C. System Operation
(1) The system receives external data from other aircraft transponders. It uses this data to calculate the range, the closing rate, and the bearing of the other aircraft. The system also receives altitude data from the other aircraft that are reporting altitude. From this data, the system calculates possible collision dangers (from the other aircraft) and tells the flight crew of the necessary avoidance measures that have to be taken.
(2) TCAS can only interrogate aircraft that are fitted with Air-Traffic Control Radio-Beacon System (ATCRBS) transponders (Mode C or A/C) or mode S transponders.
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