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R  The own aircraft is represented by the aircraft symbol at the 
R  center of the dial in ROSE mode and at the lower quarter and at the 
R  center of the image in ARC mode. 
R  A white range ring with markings at each of the twelve clock 
R  positions is placed around the own aircraft symbol at a radius of 
R  2.5 NM. 
R  The following figure shows an example of the display on the ND: 
R 
R  (Ref. Fig. 025) 
R  These indications are only presented for the 10, 20 and 40 NM range 
R  selections. If a TA or RA type intruder is detected and the display 
R  range is at a higher scale, the following message comes into view 
R  at the center of the display, in red for RA and in amber for TA: 
R  REDUCE RANGE 
R  If a TA or RA type intruder is detected and the ND mode is 
R  inadequate for display, the following message comes into view at 
R  the center of the display in the same colors as above: 
R  CHANGE MODE 
R  The TCAS can detect an intruder without acquiring its bearing (for 
R  instance, multipath problem). In this case its range, relative 
R  altitude and an arrow are displayed in the TCAS area (at the bottom 
R  of the ND). 
R  The color of the display is the same as the color of the intruder 
R  symbol. 
R  (Ref. Fig. 026) 
R  OFF SCALE intruder: if only a half of a symbol is displayed, the 
R  target is defined as an off scale intruder. This calls for 
R  increasing the range selectio on the ND.

 1EFF : 051-099, 1 34-43-00Page A4 1 1 Aug 01/05 1 1 1CES 1

R **ON A/C ALL

 (2)
 Aircraft control information on the PFD Resolution advisories are represented on the vertical speed scale of the PFD by indications given in the form of a band made up of colored sectors:

 -
a red sector represents a forbidden vertical speed range

 -
a green sector indicates the vertical speed range the aircraft should fly in to avoid a collision threat represented by one or more intruders.

 

 (3)
 Corrective advisory display Corrective resolution advisories are displayed to advise the crew to perform an avoidance maneuver in the vertical sense. This maneuver may take different forms:

 -climb or descent if the aircraft is in level flight
 -
reducing or increasing rate of climb or reversing to descent if the aircraft is in climb

 -
reducing or increasing rate of descent or reversing to climb if the aircraft is in descent. When resolution advisories are displayed, the vertical speed scale surface changes from trapezoidal to rectangular. The grey background is replaced by green and red sectors defining the optimum vertical speed values. The pilot's task is to maneuver the aircraft to keep the needle out of the red sectors and place it in the adjacent green "Fly-to" sector. The vertical speed information needle and digits are colored in red when the vertical speed is in the forbidden area. It becomes green when the vertical speed is in the authorized area. (Ref. Fig. 027)

 

 (4)
 Preventive advisory display Preventive resolution advisories advise the pilot to avoid vertical speeds that could lead to a hazardous situation. They are represented by one or two red sectors on the vertical speed scale. The pilot must keep the vertical speed of his aircraft outside these zones. For example, if own and intruder's flight paths are horizontal and cross through each other, the intruder being at a higher flight level, if the vertical separation is sufficient, it is not necessary to modify the aircraft flight path. The positive vertical speed sector is in red to indicate that the aircraft may remain at its present level or may descend but must not climb. (Ref. Fig. 027)

R 1EFF : ALL 1 34-43-00Page A5 1 1 May 01/05 1 1 1CES 1

 TCAS - PFD Data Display Figure 027
 1EFF : 1 1R 1CES  ALL  1 11 1 34-43-00 Page A6 May 01/05

 

 If intruders are detected above and below, two red sectors are displayed leaving an uncolored zone around the zero value on the vertical speed scale advising the pilot to maintain the aircraft at its current level. The following figure shows several examples of corrective and preventive advisories. (Ref. Fig. 028)
 (5)
 Messages annunciated on the ND As well as intruder information, the ND also displays operating mode messages or fault data. This information is presented in the lower section of the ND (message zone):

 -TA ONLY - white - for the TA mode (automatic or manual switching)
　
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