TCAS Flashcards

1
Q

What will you get if the other aircraft only has a mode A transponder

A

Traffic advisory

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2
Q

When will the system issue a resolution advisory

A

15 to 35 seconds CPA

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3
Q

When will the system issue a traffic advisory

A

20 to 48 seconds CPA

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4
Q

When will the system issue a proximate advisory?

A

Traffic that is within 6nm away and is not classified as TA or RA

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5
Q

What is the surveillance and display range?

A

Surveillance - 14 nm
Display - 12 nm

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6
Q

How many aircraft can be detected and tracked simultaneously?

A

Up to 30

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7
Q

Where are the TCAS antennas?

A

Two - one on the top and one on the bottom of the fuselage

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8
Q

What are the possible options for the A/B pb?

A

ABV - 9900 to -2700 ft
Normal - 2700 to -2700 ft
BLW - 2700 to -9900 ft

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9
Q

What does the RNG pb do?

A

Switches between the 6nm and 12nm forward range

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10
Q

What is the STBY mode?

A

Power is supplied to the system but TCAS functions are inhibited

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11
Q

What is the AUTO mode?

A

Normal operating mode

TCAS tracks all the aircraft in surveillance area and provides RAs and TAs

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12
Q

What is the TA ONLY mode?

A

Same as AUTO but no resolution advisories

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13
Q

What is the maximum range for traffic display on the indicators?

A

12 nm

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14
Q

What is the minimum range?

A

6 nm with the inner range ring remaining at 2 nm

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15
Q

What happens when mode selector is set to STBY?

A

All TCAS operations disabled

Indicated by a TCAS OFF flag displayed on right hand side of the display

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16
Q

What does an open cyan diamond mean?

A

Other traffic - traffic within the selected display range but not considered a threat

17
Q

What does a solid cyan diamond mean?

A

Proximate traffic - within +/- 1200 ft relative altitude and 6nm but not considered a threat

18
Q

What does a solid yellow circle mean?

A

Traffic advisory - approx 40 secs from the CPA

19
Q

What does a solid red square mean?

A

Resolution advisory - 25 secs from CPA

20
Q

When will there be an up or down arrow?

A

Aircraft is climbing or descending at more than 500fpm

21
Q

What are traffic advisories inhibited?

A

900 ft AGL when the aircraft is descending

1100 ft AGL when the aircraft is climbing

22
Q

What does “climb crossing climb” indicate?

A

The flight path of the aircraft will cross the path of the other traffic whilst maintaining separation

23
Q

What does “adjust vertical speed - adjust” indicate?

A

You should reduce or increase the rate of climb to that shown by the green arc on the VSI/TRA

24
Q

What does “reduce descent” mean?

A

You should reduce rate of descent to that shown on the green arc

25
Q

What does “monitor vertical speed, monitor vertical speed” mean?

A

You should monitor your present vertical speed to prevent entering the restricted vertical speed range depicted by the red arc on the display

26
Q

What does “climb - climb now” mean?

A

Indicates a reversal of vertical speed is required

27
Q

When are descend advisories inhibited?

A

When the aircraft is less than 1000 ft AGL during an approach or below 1200 ft AGL on take off

“Increase descent” advisories are inhibited less than 1450 ft during a descent and less than 1650 ft during an approach

28
Q

When are résolution advisories inhibited?

A

When aircraft is less than 1100 ft AGL during a climb and 900 ft AGL during a descent

TCAS automatically reverts to TA ONLY mode at these points

29
Q

When is an intruders altitude ignored?

A

When it is below 380 ft, it is considered to be on the ground

30
Q

What failure indications appear on the VSI/TRA?

A

VS failure

RA FAIL

TCAS FAIL

31
Q

What does TD FAIL flag mean?

A

Displayed when the TCAS traffic detection function is unreliable

32
Q

What does RA FAIL mean?

A

Indicates that the resolution advisory is unreliable

33
Q

What does VS flag mean?

A

Indicates the VS is unreliable

The VS pointer will be removed from view

34
Q

What does a TCAS FAIL flag mean?

A

Will be displayed and replace TEST flag if a failure is detected during a test