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AIRBUS A320 > SURVEILLANCE > Flashcards

SURVEILLANCE Flashcards

1
Q

If the XPDR mode selector is set to STBY, what does the transponders do then?

A

Both XPDRs are electrically supplied but do not operate

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2
Q

If the XPDR mode selector is set to ON, what does the transponders do then?

A

The selected transponder operates

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3
Q

Within what range does the ATSAW (Airborne Traffic Situational Awareness) scan for traffic?

A

30nm either sides,100nm longitudinal and 9900 ft altitude range

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4
Q

What two computers does the TCAS system consists of?

A

TCAS and ATSAW (Airborne Traffic Situational Awareness)

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5
Q

What does the ADS-B OUT function do?

A

Transmitts traffic surveillance data to ATC ground stations and to other aircrafts

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6
Q

What does the ADS-B IN function do?

A

Display enhanced information on the surrounding traffic

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7
Q

What is the difference in symbology for TCAS Only and TCAS + ADS-B?

A

TCAS +ADS-B combines TCAS symbols and an aircraft symbol

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8
Q

In what three different states can ATSAW symbols be displayed?

A

Basic: with altitude information
Extended: With added tail nr information
Full: Additional Groundspeed and wake turbulence category

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9
Q

What does the TRAFFIC SELECTOR function do?

A

Enables you to highlight an ATSAW symbol on the ND with the Full information set such as GS and wake turbulence category

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10
Q

How do you access the ATSAW function on the MCDU?

A

Via the MCDU MENU page

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11
Q

What is the GCS system for the Weather Radar?

A

Ground Clutter Suppression
Removes ground returns on the ND, allowing for lower tilt angles than normal.

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12
Q

What does the CAL switch do on the Weather Radar?

A

Automatically adjusts the gain based on aircraft altitude, geographical area, season and time of day

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13
Q

What is the MULTISCAN function on the Weather Radar?

A

Uses two beams and combines their data. They scan at different altitude levels
The upper detects short range weather and the lower, long range weather.

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14
Q

With the Weather Radar MULTISCAN mode set to Manual, what functions are lost?

A

GCS function is lost
The automatic CAL function is lost even with the setting to CAL

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15
Q

When will the PWS function operate?

A
  • PWS switch is in the AUTO position, even if the WX Radar is OFF
  • Aircraft is below 2300 ft
  • Either engine is running
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16
Q

How far ahead of the aircraft does the PWS scan?

A

5 nm

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17
Q

When are PWS alerts inhibited on take-off?

A

Above 100 kts up to 50 ft

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18
Q

What is the PWS Caution Aural alert on ground and in the air?

A

“MONITOR RADAR DISPLAY”

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19
Q

What is the PWS Warning Aural alert on ground?

A

“WINDSHEAR AHEAD” x 2

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20
Q

What is the PWS Warning Aural alert in the air?

A

“GO AROUND WINDSHEAR AHEAD”

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21
Q

Below what altitude is Predictive Windshear caution/warning active?

A

Active below 1’200 ft. Starts scanning from 2’300 ft on approach but no alarms until below 1’200 ft

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22
Q

In what area is the Predictive Windshear caution and warning alerting for on the ground?

A

Caution looks 25 degrees either side starting 0,5nm from the aircraft out to 3nm
Warning looks in a narrow band of 0,25nm either side of the aircraft out to 3nm

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23
Q

In what area is the Predictive Windshear caution and warning alerting for in the air?

A

Caution looks 25 degrees either side starting 0,5nm from the aircraft out to 3nm
Warning looks in a narrow band of 0,25nm either side of the aircraft out to 1,5nm

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24
Q

Through which aircraft system is Reactive Windshear alerted?

A

GPWS Mode 7

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25
Q

Below what altitude is Reactive Windshear active?

A

Below 1’500 ft

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26
Q

How is turbulence displayed on the weather radar?

A

In magenta

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27
Q

Within what distance is turbulence displayed on the WX Radar?

A

40 nm

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28
Q

What is a PAC (Path Attenuation Compensation) alert on the WX Radar?

A

The PAC alert displays a yellow arc on the outermost scale on the ND when an intervening rainfall creates an attenuated area behind a storm cell

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29
Q

What does the hazard function do on the weather radar?

A

Reflectivity color of the weather is increased in case of lightning, hail or turbulence to better assess relative intensity of a cell. Active out to 320 nm.
Yellow parts might become red and green parts might become yellow

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30
Q

What is the “associated threat assessment” on the weather radar?

A

Paints red dots over an area of potential lightning and icing

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31
Q

What is the “Predictive Overflight Icon” on the WX Radar?

A

It shows at red dotted area icon where a fast growing cell might be present.

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32
Q

How is Severe and Moderate Turbulence Displayed on the WX Radar?

A

It provides two levels of turbulence
Basic plain magenta: Severe turbulence
Speckle magenta: Moderate Turbulence

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33
Q

How many modes does GPWS have?

A

7

34
Q

What descent rates are considered excessive with regards to GPWS at low altitude?

A

2’500 fpm below 2’500 ft

35
Q

Which alert have priority nr 1, 2 and 3with GPWS warnings?

A

Priority 1 = Mode 7 “Windshear x3”
Priority 2 = Mode 1 “Pull up” (sink rate)
Priority 3 = Mode 2 “Pull up” (terrin closure)

36
Q

Describe GPWS Mode 1

A

Mode 1 = EXCESSIVE DESCENT RATES
Activates below 2’500 ft AGL
Has two protection envelopes:
1. “SINK RATE x 2”
2. “PULL-UP”

37
Q

Describe GPWS Mode 2

A

Mode 2 = EXCESSIVE TERRAIN CLOSURE
Activates when terrain is within 2’000 ft of the aircraft
Has two protection envelopes:
1. “TERRAIN TERRAIN”
2. “PULL -UP”

38
Q

Describe GPWS Mode 3

A

Mode 3 = ALTITUDE LOSS AFTER TAKE-OFF
Works from 50 ft altitude
Activates when altitude loss is 10% of altitude gained.
(A 50 ft altitude loss after 500 ft altitude gain)
Warning is : “DON’T SINK x 2”

39
Q

Describe GPWS Mode 4

A

Mode 4 = INSUFFICIENT TERRAIN CLEARENCE. Alerts below 1’000 ft with “TOO LOW TERRAIN”
Mode 4A: “TOO LOW GEAR” below 500 ft AGL and less
than 190 kts
Mode 4B: “TOO LOW FLAPS” below 245 ft AGL kts and
less than 160 kts
Mode 4C: “TOO LOW TERRAIN” Active during takeoff and alerts when the terrain is rising more steeply than the aircraft is climbing

40
Q

Describe GPWS Mode 5

A

Mode 5 = DESCENT BELOW GLIDESLOPE
Works below 925 ft AGL and 1.3 dots Fly Up indication
Soft warning = Below 925 ft and below 1,3 dots
Hard warning = Below 300 ft and below 2,0 dots
Will reset below 50 ft, above 1’900 ft and when selecting a VOR frequency

41
Q

Describe GPWS Mode 6

A

Mode 6 = ADVISORY CALLOUTS
“MINIMUMS”
“FIVE HUNDRED”
“50, 40, 30 RETARD”
“BANK ANGLE”

42
Q

What does ROPS/ROW stand for?

A

“Runway Overrun Prevention System” with its warning system called “Runway Overrun Warning”

43
Q

When does ROPS detection start and from when is the ROW function armed?

A

Detection starts at 2000 ft and the ROW function arms at 400 ft

44
Q

Where is the ROW/ROP pb-sw located, if installed?

A

On the EVAC overhead panel

45
Q

Within what distances/ranges is TCAS detection available?

A
  • 30 nm either side
  • 30 to 80 nm longitudinally
  • +-9900 ft above and below
46
Q

What is the difference with the Above, Normal and Below settings for TCAS?

A

Above = 9’000ft above - 2’700ft below
Normal = 2’700ft above - 2’700ft below
Below = 2’700ft above - 9’000ft below

47
Q

Which one have higher priority, GPWS or TCAS?

A

GPWS

48
Q

What should your vertical speed be within 1’000ft of your assigned altitude?

A

Max 1’000 ft/min

49
Q

What does a hollow diamond indicate on a TCAS display?

A

Other traffic. More than 1’200 ft vertically and beyond 6 nm but closer than 30 nm

50
Q

What does a filled diamond indicate on a TCAS display?

A

Proximate traffic. +-1’200 ft and within 6 nm

51
Q

What is the estimated TAU before reaching CPA for a TA?

A

20-48 sec dependant on altitude

52
Q

What is the estimated TAU before reaching CPA for an RA?

A

15-35 sec dependant on altitude

53
Q

Below what altitude are all TA:s inhibited when climbing

A

600 ft

54
Q

From what altitude are all TA:s inhibited when descending?

A

400 ft

55
Q

Below what altitude are all RA:s inhibited when climbing

A

1100 ft

56
Q

From what altitude are all RA:s inhibited when descending?

A

900 ft

57
Q

What is the difference with the Above, Normal and Below settings for TCAS?

A

Above = 9’900ft above - 2’700ft below
Normal = 2’700ft above - 2’700ft below
Below = 2’700ft above - 9’900ft below

58
Q

What is the difference between the “THRT” and “ALL” positions on the TCAS panel?

A
  • THRT displays Proximate and Other intruders only if a TA or RA is present and they are within +- 2700 ft
  • ALL displays all Proximate and Other intruders even if no TA or RA is present
59
Q

What does an amber “TCAS” indication on the PFD altitude scale indicate?

A

TCAS cannot deliver RA data

60
Q

When is a TCAS STBY memo displayed?

A

TCAS selected to STBY
Both Transponders FAIL
Both Radar Altimeters FAIL

61
Q

What do you do with the FD during an RA?

A

Ignore it or turn it off

62
Q

What principle does the windshear warning system work on?

A

Doppler effect of moisture ahead of the aircraft allows the radar to predict windshear ahead.

63
Q

Does the WX radar have to be on for the PWS to work?

A

No

64
Q

What happens to the GPWS functions when you get a FAULT light on the TERR pb?

A

All basic GPWS functions are lost but Enhanced features remain

65
Q

You get a Terrain Warning, how long until impact?

A

30 seconds

66
Q

You get a Terrain Caution, how long until impact?

A

60 seconds

67
Q

What is the difference between the basic and enhanced GPWS?

A

Basic simply looks at the Radio Altimeter while enhanced looks and predicts terrain ahead.

68
Q

If the TERR function of EGPWS fails, or is selected OFF, what happens to GPWS?

A

Inhibits the TAD and TCF modes, and does not affect the basic GPWS mode 1-5. If OFF is selected the ECAM caution NAV GPWS TERR DET FAULT is displayed.

69
Q

When should LDG FLAP 3 pb be selected ON?

A

Flap mode (too low flaps mode 4) is inhibited, to avoid nuisance warning in case of landing with flaps setting reduced).

70
Q

How is the terrain information displayed in order to prevent confusion with weather radar?

A

To differentiate between the terrain and the weather display, the terrain display sweeps form the center outward to both sides of the ND.

71
Q

If TERR ON ND is indicating ON, what happens to the weather radar?

A

Weather radar image not displayed.

72
Q

When will TERR ON ND automatically switch on?

A

If an alert is generated (caution or warning) and TERR p/b switch ON ND is not selected, the terrain and the obstacles are automatically displayed, and the ON light of the TERRN p/b switch ON ND comes on.

73
Q

What happens to GPWS warnings if the loudspeakers are turned off?

A

The audio volume of GPWS aural warning or cautions is not controlled by the loudspeaker volume knobs.

74
Q

Does a “FAULT” light on the SYS pushbutton affect the TERRAIN mode?

A

No

75
Q

If the TERR mode failed, does it affect the basic GPWS?

A

No

76
Q

What does an amber “FAULT” light in the SYS pushbutton indicate on the GPWS panel?

A

Any failure of GPWS mode 1-5

77
Q

Pressing the SYS pushbutton on the GPWS panel does what?

A

Inhibits all EGPWS warning except TERR system

78
Q

What would prevent the weather display on the ND?

A

Mode selector in PLAN- TERR selected ON

79
Q

How many RADAR systems are installed?

A

How many RADAR systems are installed?

80
Q

Does predictive windshear detection work when the RADAR system is switched OFF?

A

Yes, if the Windshear switch is in AUTO

81
Q

When is the Ground Proximity Warning System (GPWS) active?

A

The GPWS is embedded in the TCAS system (Terrain and Traffic Collision Avoidance system) and generates aural and visual warnings between radio altitudes 10 and 2450ft.

AIRBUS A320 (33 decks)

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