(2)
Two Phased Array Directional Antennas

 (3)
Integrated Display System (IDS)

 (a)
Primary Flight Display (PFD)

 (b)
Navigation Display (ND)

 (c)
EFIS Control Panel

 (4)
A Mode S Transponder System that has this equipment:

 (a)
Two Mode S Transponders

 (b)
A TCAS/ATC Control Panel

 (c)
Two Omnidirectional Antennas

 H.  The TCAS computer, directional antenna, and control unit are included in this section. Other TCAS equipment is included to a level necessary to understand the TCAS operation. See Chapter 34-53-00 for the ATC mode S operations and Chapter 31-61-00 for the IDS/EFIS operations.
 2.  TCAS Computer (Fig. 2)
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CAPTAIN'S INSTRUMENT PANEL

SEE MAIN EQUIPMENT CENTER Traffic Alert and Collision Avoidance System (TCAS) - Component Location Figure 1 (Sheet 1)

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TRANSPONDER MODE SELECT SWITCH SWITCH

TCAS/ATC CONTROL PANEL

Traffic Alert and Collision Avoidance System (TCAS) - Component Location
Figure 1 (Sheet 2)

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340 
10 

TCAS COMPUTER
D

Traffic Alert and Collision Avoidance System (TCAS) - Component Location

Figure 1 (Sheet 3)

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 A.  The TCAS computer is located in the main equipment center on the electronic equipment rack, E1-5. The TCAS computer receives its primary power from the 115V AC Bus No. 3.
 B.  The TCAS computer reads and keeps this information about your airplane:
 (1)  
Heading

 (2)  
Radio altitude

 (3)  
Mode control requests and traffic display control inputs from the Mode S Transponder

 (4)  
Mode S identification code

 (5)  
Maximum airspeed data

 (6)  
Landing gear level position

 (7)  
AIR/GND relay switch status

 (8)  
Advisory delay discrete inputs

 C.  TCAS gets IRS data from the IRU selected by the first officer's IRS source select switch. Heading used with the pressure altitude data lets the TCAS find your airplanes position, altitude and flight path.
　
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