Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Airbus A320 > Surveillance > Flashcards

Surveillance Flashcards

1
Q

How many transponders are there ?

A

2 ATC transponders

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What kind of data does the transponder transmit ?

A

A/C altitude - flight number - IAS - mach and V/S - heading - GS - selected altitude and baro settings

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the purpose of the TCAS ?

A
  • To detect, display surrounding A7C with a transponder
  • To calculate and display possible collision threat
  • To trigger vertical speed orders to avoid collisions
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the detection range of the TCAS ?

A

TCAS detects intruders flying within 30 NM on either sides, approx 30 to 80 NM longitudinally (depending of A/C configuration) and within a range of 9900 ft above and below the aircraft

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the Closest Point of Approach (CPA)?

A

The CPA is the closest point between two aircraft and is calculated with several parameters (altitude, rate separation, bearing…)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the Estimated Time (TAU) ?

A

The TAU is the ratio between the distance that separates both aircraft, and the sum of their speed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the different zones of the TCAS ?

A

4 different zones :
- Other Intruders
- Proximity Intruders
- Trafic Advisory (TA)
- Resolution Advisory (RA)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is a Resolution Advisory ?

A

Real collision threat !
TAU is about 25 seconds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is a Trafic Advisory ?

A

Possible colllision threat !
TAU is about 40 seconds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is a Proximity Intruder ?

A

No collision threat !
Intruder is within 6 NM laterally and +/- 1 200ft vertically

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is an Other Intruder ?

A

No collision threat !
Any other aircraft within TCAS range

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How many TCAS modes are there ?

A

3 modes :
- SBY
- TA ONLY
- TA/RA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

When is TA ONLY mode automatically selected ?

A

In case of :
- windshear alert
- stall warning
- GPWS alert
A/C below 1000ft AGL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the particularity of TA ONLY mode ?

A

All RA are inhibited and converted to TA
No vertical orders are indicated
TA ONLY is displayed on the ND

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the difference between THRT - ALL - ABV and BLW configurations ?

A
  • THRT :
    Proximate and intruders are displayed only if TA or RA is present and they are within +/- 2700ft of the A/C
  • ALL :
    Proximate and intruders are displayed even if no TA or RA is present and they are within +/- 2700ft of the A/C
  • ABV :
    The same as ALL, except that the intruders are displayed if within 9900ft above and 2700ft below the A/C
  • BLW :
    The same as ALL, except that the intruders are displayed if within 9900ft below and 2700ft above the A/C
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the purpose of the GPWS ?

A

To warn the crew of hazardous threats such as collision with terrain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What are the 5 different Basic modes ?

A

Mode 1 : Excessive rate of descent
Mode 2 : Excessive terrain closure rate
Mode 3 : Altitude loss after take off or go-around
Mode 4 : Terrain clearance not sufficient if not in landing CONF
Mode 5 : Excessive descent below glideslope

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the Mode 1 ?

A

Excessive rate of descent, based on descent rate and radio height.

Aural alert :
CAUTION : “SINK RATE, SINK RATE”
WARNING : “PULL UP”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the Mode 2 ?

A

Excessive terrain closure rate, based on LDG/flaps and radio height

2 types of alert :
- Mode 2A : active during climb and cruise
- Mode 2B : active during approach and 60 sec after takeoff

Aural alert :
CAUTION : “TERRAIN, TERRAIN”
WARNING : “PULL UP”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is the Mode 3 ?

A

Altitude loss after take off or go-around when LDG/flaps not in landing CONF

Aural alert :
CAUTION : “DON’T SINK, DON’T SINK”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the Mode 4 ?

A

Unsafe terrain clearance not sufficient when not in landing CONF

2 types of alert :
- Mode 4A : active during cruise and approach
- Mode 4B : active during cruise and approach

Aural alert Mode 4A :
CAUTION : “TOO LOW TERRAIN, TOO LOW GEAR”

Aural alert Mode 4B :
CAUTION : “TOO LOW TERRAIN, TOO LOW FLAPS”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is the Mode 5 ?

A

Excessive descent below glideslope

Aural alert :
CAUTION : “GLIDESLOPE”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is the purpose of the Terrain Awareness and Display ?

A

It computes caution and warning enveloppe in front of the A/C depending of : altitude, nearest runway, GS, turn rate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is the caution and warning time for the Terrain Awareness vertical enveloppe ?

A

Warning : approx 30 seconds
Caution : approx 60 seconds

25
Q

What is the Terrain Awareness horizontal enveloppe ?

A

0,25NM

26
Q

What is the purpose of the ROW / ROPS system ?

A

To alert pilots in case of potential runway overrun situation for DRY and WET runways

27
Q

What the system is made of ?

A

ROW function, which automatically arms at 400ft AGL and works until start of braking
ROPS function which works from start of braking until the aircraft speed is below 30kt

28
Q

How does the ROW function work ?

A

The ROW function is the capability to land on the available landing distance.

The system computes landing distance for the selected runway conditions (DRY or WET)
The landing calculation is updated several times per second and compared these values with ROPS runway lentgh from TAWS database.

Detection starts at 2000ft and arms at 400ft.

29
Q

What are the ROW assumptions ?

A
  • Maximum manual brake pressure and
  • IDLE REV for DRY runways and
  • MAX REV for WET runways
30
Q

When does ROW function activate ?

A

Below 400ft, if landing calculation is more than the ROPS runway database :
“RWY TOO SHORT” is displayed in amber on the PFD

Below 200ft, if landing calculation is more than the ROPS runway database :
“RWY TOO SHORT” is displayed in red on the PFD and associated with aural alert

31
Q

How does the ROP function work ?

A

The ROP function is the decelerration and capability to stop before the end of the runway.

On the ground, the system computes braking distance for the current aircraft and runway conditions.

32
Q

When does ROP function activate ?

A

If braking not sufficient and an overrun is detected :
“MAX BRAKING” and “MAX REVERSE” are displayed in red on the PFD, associated with aural alert.

33
Q

When does the message “KEEP MAX REVERSE” is triggered ?

A

Below 80 kt, when the system still detects an overrun situation with max braking and max REV.

34
Q

What are the 2 different modes regarding the weather radar ?

A
  • Multiscan with Automatic mode
  • Multiscan with Manual mode
35
Q

What does the AUTO mode on the weather radar work ?

A

The radar scans alternatively at 2 antenna tilt settings. The radar display on the ND is the result of the stored and combined information from each beam.

36
Q

What does the MANUAL mode on the weather radar work ?

A

Pilots manually adjust the antenna tilt settings, and can adjust gain either manually or automatically. The GCS function is not available in manual mode.

37
Q

What is the Ground Clutter Suppression (GCS) ?

A

The GCS removes the ground return on the ND to prevent unecessary clutter display.

38
Q

What is the enveloppe boundaries of the weather radar ?

A

The enveloppe is bounded at +/- 4000ft of reference flight path.

39
Q

At which altitude is the lower enveloppe bounded if convective weather detected ?

A

25 000 ft

40
Q

At which altitude is the upper enveloppe bounded when the A/C is below 6000 ft ?

A

10 000 ft

41
Q

What is the reference flight path ?

A
  • current speed vector to 60 NM ahead
  • beyond 60 NM, levelled reference flight path
42
Q

From which altitude does the Predictive Warning System operate ?

A

From 1800ft RA (on newer weather radar) and from 2300ft RA (on older weather radar)

43
Q

What is the PWS scaning range during approach ?

A

5NM ahead of the aircraft.

44
Q

What is the particularity of the PWS alert ?

A

The alerts depend on the location of the windshear, not the strenght.

45
Q

What is the aural alert and PFD display for a windshear warning during approach ?

A

“GO-AROUND, WINDSHEAR AHEAD” and “W/S AHEAD” in red on the PFD

46
Q

What is the aural alert and PFD display for a windshear warning during takeoff ?

A

“WINDSHEAR AHEAD” (twice) and “W/S AHEAD” in red on the PFD

47
Q

What is the aural alert and PFD display for a windshear caution ?

A

“MONITOR RADAR DISPLAY” and “W/S AHEAD” in amber on the PFD

48
Q

What is the aural alert and PFD display for a windshear advisory ?

A

No aural alert and no message on the PFD.
ONLY windshear displayed on the ND

49
Q

What is the maximum speed at which the PWS work during takeoff ?

A

Up to 100kt

50
Q

What is the PWS scaning range during takeoff ?

A

3 NM

51
Q

When is the PWS inhibited ?

A

During takeoff, alerts are inhibited above 100kt up to 50ft.
During landing, alerts are inhibited below 50ft.
PWS is inhibited by reactive windshear or stall warning

52
Q

What is the priority level of the PWS ?

A

PWS has priority over TCAS, GPWS and other FWC warnings.

53
Q

What happens to the PWS below 1800ft RA ?

A

Below 1800ft RA (or 2300ft RA on older weather radar), the system scans 5NM ahead.

54
Q

What happens to the PWS below 1500ft RA ?

A

Below 1500ft RA, a windshear icon in red appears on the ND. The advisory may upgrade to caution or warning if the A/C gets closer to the windshear.

55
Q

What happens to the PWS below 1200ft RA ?

A

Below 1200ft RA and between 3 NM and 1.5NM from the windshear, caution aural alert “MONITOR RADAR DISPLAY” and “W/S AHEAD” in amber on the PFD.

56
Q

What happens to the PWS within 1.5 NM range ?

A

1.5NM from the windshear, warning aural alert “GO-AROUND WINDSHEAR AHEAD” and “W/S AHEAD” in red on the PFD.

57
Q

What happens to the PWS between 370ft and 50ft RA ?

A

Visual and aural warning alerts are downgraded to caution alerts

58
Q

What happens to the PWS below 50ft RA ?

A

Alerts are inhibited

Airbus A320 (22 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions