TCAS

Question 1

Block Altitude Range

Answer 1

9000 above to 9000 below

Question 2

Normal Altitude Range

Answer 2

2700 above to 2700 below

Question 3

Above Altitude Range

Answer 3

8700 above to 2700 below

Question 4

Below Altitude Range

Answer 4

2700 above to 8700 below

Question 5

When is the white arrow displayed to the right of the intruder symbol

Answer 5

Vertical Velocity of 500 FPM or greater

Question 6

What changes when FL is activated

Answer 6

White relative altitude arrow is replaced with intruders own reported altitude in FL format

Question 7

What are the intruder display priorities

Answer 7

1 Threat aircraft at RA level
2 Threat aircraft at TA level
3 Proximity intruders
4 Nonthreat intruders

Question 8

How are intruders with no valid bearing data displayed

Answer 8

Intruders with no valid bearing data are listed on either side
of the EHSI/HSD with the relative altitude, intruder symbol,
and arrow, followed by the range in nm displayed in a
row. The data is boxed in the same color as the intruder
symbol color. Up to 10 rows can be displayed at any time,
five each to the left and right side of the EHSI/HSD with
the first at top left, the second at top right, the third at
second top left, etc. The order is according to the following
priority:
a. RA
b. TA
c. Proximity
Nonthreat category aircraft are not displayed. If more than
10 intruders need to be displayed, the top priorities are
displayed. The intruders of the lowest priority detected last
are not displayed.

Question 9

Which TCAS antenna senses bearing and range

Answer 9

Upper antenna on nose

Question 10

How are intruders beyond selected range displayed?

Answer 10

TA, RA, proximity aircraft, and, in some cases, nonthreat
aircraft that are beyond the display scale, are represented by
half the intruder symbol with the attached data (relative
altitude and arrow). Nonthreat aircraft become half the
intruder symbol on the PFR display only

Question 11

Up to how many intruders can TCAS display as intruders

Answer 11

30

Question 12

What is the maximum surveillance range of the TCAS

Answer 12

40 nm

Question 13

How many intruders can TCAS system track (not display)?

Answer 13

Up to 60

Question 14

Symbol for nonthreat aircraft

Answer 14

Open white diamond

Question 15

Symbol for proximity aircraft

Answer 15

solid white diamond

Question 16

Symbol for threat aircraft at TA level

Answer 16

solid yellow circle

Question 17

Symbol for threat aircraft at RA level

Answer 17

Solid red square

Question 18

When do you get a Traffic Advisory

Answer 18

When intruding aircraft reach a point
where the system predicts the closest point of approach
(based on current flight path) to be between 20 and 48
seconds

Question 19

When do you get a Resolution Advisory

Answer 19

When a proximity to collision situation is detected. Student guide says 10-35 seconds

Question 20

When are TCAS aural alerts inhibited?

Answer 20

When the aircraft is on

the ground or A/A or A/G master mode

Question 21

Below what altitude is the INCREASE DESCENT RA visual and aural alert inhibited

Answer 21

Below 1450 AGL

Question 22

If RA mode is selected, the TCAS operates in TA
mode only with all aural alerts inhibited under any
of the following conditions:

Answer 22

1. Ownship is below 900 feet AGL.
2. Ownship is below 1100 feet AGL and
   climbing.
3. The RALT is disabled via the UFCP
   EGI Key Display or by selecting the
   POD configuration via ML-6 on the
   MFD WPN Display Page.
4. RALT data is not valid and the aircraft
   is pitched or banked more than 30°
   (TCAS assumes aircraft is at low AGL
   and loss of RALT is due to bank).

Question 23

At what altitude are intruders considered on-ground? (not displayed)

Answer 23

380 +/-20 AGL

Question 24

What are the 5 TCAS modes of operation

Answer 24

(1) SBY —Standby
(2) A —Mode S transponder transmits in mode A without altitude reporting to ATC. No TCAS.
(3) C— Mode S transponder transmits in mode A and mode C with altitude reporting to ATC. No TCAS.
(4) TA— Traffic Advisory mode. Aircraft meeting the criteria of TA, proximity, and non-threat are displayed. RA aircraft are displayed with a TA symbol. Modes A and C are included for normal ATC functions.
(5) RA — Resolution Advisory mode. Aircraft meeting the criteria of RA, TA, proximity, and non-threat are displayed. RA aircraft are displayed with the appropriate threat symbol. Voice and RA indications on the EADI and HUD are provided. Modes A and C are included for normal ATC functions.

Question 25

When is an intruder considered a proximity threat?

Answer 25

Within 6 miles and +/- 1200 feet

Question 26

What are the selectable TCAS ranges

Answer 26

2.5, 5, 10, 20