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A320/ FCOM > SURV Surveillance > Flashcards

SURV Surveillance Flashcards

1
Q

The aircraft has ___ ATC transponders (XPDR) which are controlled by a control panel (ATC/TCAS) on the center pedestal.
Only the selected XPDR operates.

A

2

The XPDR automatically responds to requests:
‐ From the ATC, to ensure effective air traffic surveillance
‐ From other aircraft that have a TCAS, to ensure that traffic alerts are triggered.

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2
Q

ADS-B OUT
With the ADS-B OUT capability, the Mode S transponders automatically and continuously transmit surveillance data, without preliminary interrogation, to:

A

‐ The ATC ground station
‐ Aircraft capable of ADS-B IN function.

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3
Q

The aircraft is fitted with ___ Multiscan weather radar systems with a Predictive WindShear (PWS  ) function and a weather hazard prediction function  .

A

1

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4
Q

The flight crew can display weather data on the CAPT and/or F/O NDs in either ___

A

ARC or ROSE mode.

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5
Q

The flight crew can use the radar in the following modes:

A

‐ Multiscan Automatic mode: MULTISCAN sw set to AUTO (recommended), or
‐ Manual mode: MULTISCAN sw set to MAN.

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6
Q

When in Multiscan Automatic mode:
‐ The radar alternatively scans at ___ antenna tilt settings. The weather radar image that is displayed is the result of the stored and combined information from each beam.
‐ When the gain selector is set to the ___ , the radar automatically adjusts the gain based on various parameters (aircraft altitude, geographical area, season, time of the day) to obtain the best weather display.
‐ To prevent unnecessary clutter display, the “Quiet and Dark cockpit” philosophy removes the weather that:
‐ is not on the aircraft flight path
‐ is not a threat to the aircraft (post convective cell).
‐ The ___ function removes the ground returns from the ND.

A
  • two
  • Calibrated position (CAL)
  • Ground Clutter Suppression (GCS)
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7
Q

When in Multiscan Manual mode:
‐ The flight crew can adjust manually the antenna tilt settings, and can adjust gain either automatically or manually using knobs located on the radar control panel
‐ The ___ function is not available
‐ When the gain selector is set to ___ , there is no automatic gain adjustment based on altitude,
geographical area, season and time of the day.

A
  • GCS
  • CAL
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8
Q

PREDICTIVE WINDSHEAR SYSTEM
The weather radar has a Predictive WindShear system (PWS) that operates when the PWS switch is in the AUTO position , and the aircraft radio height is below ___ , and
‐ Weather radar is ON (Radar sw on position 1 or 2), or
‐ Weather radar is OFF, and
‐ At least one engine is running, and
‐ Aircraft ground speed is greater than 30 kt, or
‐ Aircraft longitudinal acceleration is above a given threshold during at least 0.5 s.

A

2 300 ft

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9
Q

The system scans the airspace for windshear within a range of ___ ahead of the aircraft. When the system detects windshear, a windshear symbol appears on the ND

A

5 NM

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10
Q

Predictive windshear warnings and cautions:

A
  • Warning (Approach) / «GO AROUND WINDSHEAR AHEAD» / W/S AHEAD (red) PFD / Windshear icon ND
  • Warning (Takeoff) / «WINDSHEAR AHEAD» (twice) / W/S AHEAD (red) PFD / Windshear icon ND
  • Caution / «MONITOR
    RADAR DISPLAY» / W/S AHEAD (amber) PFD / Windshear icon ND
  • Advisory / NO Aural Warning / NO Indication PFD / Windshear icon ND
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11
Q

PREDICTIVE WINDSHEAR SYSTEM
During the takeoff roll, up to 100 kt, both warnings and cautions are available within a range of

A

3 NM.
Advisory Alerts upto 5 NM -/+ 30°
Note: This is also applicable during taxi when weather radar is set to ON.

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12
Q

PREDICTIVE WINDSHEAR SYSTEM
Windshear Alerts Above 50 feet
During final approach, the visual and aural warning alerts are downgraded to caution alerts between 370 ft AGL and 50 ft AGL, and range between

A

1.5 NM and 0.5 NM.

1200 ft AGL and above Windshear Mode Active
No Alerts/Displays upto 2300 ft AGL

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13
Q

PREDICTIVE WINDSHEAR SYSTEM
At takeoff, alerts are inhibited above ___ and up to ___ . During landing, alerts are inhibited below ___ .

A

100 kt / 50 ft / 50 ft

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14
Q

The aural alerts of the Predictive WindShear system (PWS):
‐ Have priority over

A

TCAS, GPWS, and other FWC aural warnings

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15
Q

The aural alerts of the Predictive WindShear system (PWS):
‐ Are inhibited by

A

reactive windshear detection and aural messages of stall warnings.

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16
Q

WEATHER RADAR
Display mode selector
WX+T
Weather and Turbulence mode :
The ND indicates precipitation and turbulence areas. Turbulence areas are displayed in magenta (within ___ ).

A

40 NM

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17
Q

WEATHER RADAR
Display mode selector
WX+T+HZD
Weather, Turbulence and Hazard mode (recommended position) :
The ND indicates precipitation, turbulence areas in magenta (within 40 NM) and hazard prediction risk areas.
Hazard prediction function is only available when the MULTISCAN sw is set to ___ .

A

AUTO

Note: When MULTISCAN sw is set to MAN, WX+T+HZD mode is equivalent to WX+T mode.

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18
Q

WEATHER RADAR
Display mode selector
MAP
Map mode :
The radar operates in ground mapping mode: black indicates water, green indicates the ground, and amber indicates ___

A

cities and mountains.

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19
Q

WEATHER RADAR
TILT knob
This knob adjusts the antenna tilt when MULTISCAN sw is set to MAN.
Zero indicates

A

the horizon reference provided by the IRS.

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20
Q

WEATHER RADAR
Tilt Angle
The tilt angle is the angle between the horizon and the ___

A

radar beam axis.

This value represents the average of
the lower and the upper beam tilts.

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21
Q

WEATHER RADAR
Path Attenuation Compensation (PAC) Alert
When the flight crew sets the display mode selector to WX or WX+T, or WX+T+HZD  and sets the gain to CAL, and when the aircraft is within ___ of a storm cell, the PAC alert is available.

A

80 NM

Note: The PAC alert is only available when the MULTISCAN sw is in the AUTO position.

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22
Q

WEATHER RADAR
Path Attenuation Compensation (PAC) Alert displays a yellow arc on the outermost scale of the ND, when

A

an intervening rainfall creates an attenuated area behind a storm cell (also called a radar shadow or attenuation effect).

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23
Q

Predictive WindShear area indication
A ___ indicate the predicted windshear area. Windshear indication is available in ARC and ROSE ND modes.

A

red and black symbol and two yellow radial lines

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24
Q

WEATHER HAZARD PREDICTION FUNCTION INDICATION ON ND
The Weather, Turbulence and Hazard mode (WX+T+HZD) enables the flight crew to have the following information displayed on the ND:

A

‐ The weather returns that appear in different colors
‐ The turbulence areas in magenta (within 40 NM)
‐ The weather hazard predictions computed by the weather radar.

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25
Q

WEATHER HAZARD PREDICTION FUNCTION INDICATION ON ND
For the weather hazard predictions:
‐ The weather radar computes an automatic threat assessment of the lightning, hail and convective
activity in a storm cell and in the area near the storm cell ___
‐ The weather radar is also able to alert the flight crew of storm cells that may rapidly build below
the aircraft flight path ___ .

A
  • (Core Threat Assessment and
    Associated Threat Assessment)
  • (Predictive Overflight)

Note: The hazard predictions are only available when the Multiscan mode is in AUTO.

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26
Q

WEATHER HAZARD PREDICTION FUNCTION INDICATION ON ND
CORE THREAT ASSESSMENT
The Core Threat Assessment function operates until ___ . In case the weather radar determines that lightning, hail or turbulence may occur in a given cell, native reflectivity color of the weather is increased in order to better reflect the threat associated with a cell core.
The adjustment can go up to a color level (green cells may become yellow, yellow cells may become red).

A

320 NM

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27
Q

WEATHER HAZARD PREDICTION FUNCTION INDICATION ON ND
ASSOCIATED THREAT ASSESSMENT
Associated threat assessment enables to indicate an area of possible hail, lightning, and convection on the ND. This permits to identify potential threats even if there is no reflective activity
in the area.
Associated threats are represented by ___ on the ND and can be within the cell boundary or outside.

A

red dots

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28
Q

WEATHER HAZARD PREDICTION FUNCTION INDICATION ON ND
ASSOCIATED THREAT ASSESSMENT
Two types of indications can be displayed:
(1) The first type of indication is represented by red dots in the area of potential lightning and icing found in precipitation around the freezing level. This information is available only when the aircraft is ___
(2) The second type of indication is represented by red dots in a ___ shape on top of a storm cell displayed on the ND indicating a potential of icing, hail and/or lightning. This information is available at all altitudes. The rectangle may extend beyond the storm cell to indicate potential threats that can not be seen by the basic reflectivity function of the weather radar.

A
  • below the freezing level or up to 6 000 ft above the freezing level.
  • rectangular
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29
Q

WEATHER HAZARD PREDICTION FUNCTION INDICATION ON ND
PREDICTIVE OVERFLIGHT FUNCTION
The predictive overflight function is active above ___ and operates up to ___ . Its aim is to indicate risk constituted by cells growing rapidly underneath main radar beams. For this purpose, an ___ with very low tilt searches for growing cells.

A

25 000 ft / 40 NM /auxiliary beam

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30
Q

PREDICTIVE OVERFLIGHT FUNCTION
When a conflict between a fast growing cell and the aircraft flight path is detected, a Predictive Overflight icon is displayed.
The Predictive Overflight icon is represented by

A

an area of red dots with red boundaries.

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31
Q

Predictive Overflight Function
First, the icon is displayed “alone” over black when the concerned cell can not be displayed (the cell is much lower than aircraft flight level). Then, when cell reach aircraft flight level, the icon and the reflectivity are displayed together. Finally, the icon is removed ___ after cell ceases to be considered as a threat by the weather radar or when the relevant depiction (i.e. at least red core) for the cell is displayed on ND.

A

1 min

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32
Q

SEVERE AND MODERATE TURBULENCE DISPLAY
The weather hazard prediction function provides two levels of turbulence:

A

(1) Basic plain magenta:
It indicates potential severe turbulences (available in WX+T or WX+T+HZD display mode).
(2) Speckle magenta:
It indicates potential moderate turbulences that could decrease passenger comfort (available ONLY in WX+T+HZD display mode).

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33
Q

The purpose of the Ground Proximity Warning System (GPWS) is to warn the flight crew of potentially hazardous situations, such as

A

a collision with terrain. It detects terrain collision threats and triggers applicable aural and visual indications.

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34
Q

The GPWS includes:
‐ Five basic modes active up to radio height of 2 500 ft:

A
  • Excessive rate of descent (Mode 1)
  • Excessive terrain closure rate (Mode 2)
  • Altitude loss after takeoff or go-around (Mode 3)
  • Terrain clearance not sufficient, if not in landing configuration (Mode 4)
  • Excessive descent below the glide slope (Mode 5).
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35
Q

A predictive GPWS  function, based on a GPWS database, to display terrain information. It can be provided:
* By Honeywell through Enhanced GPWS (EGPWS)

The predictive GPWS is composed of:

A
  • Mandatory functions such as the Forward Looking Terrain Alerting function
  • Optional functions such as the obstacle database.
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36
Q

The GPWS computes the geometric altitude of the aircraft by using:

A

‐ Pressure altitude
‐ Radio altitude
‐ Temperature
‐ Barometric references
‐ GPS altitude for predictive GPWS 
‐ Data from the GPWS database for predictive GPWS  .

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37
Q

The TERRAIN AWARENESS AND DISPLAY function computes a caution and a warning envelope in front of the aircraft, depending on all of the following:

A

‐ The aircraft altitude
‐ The nearest runway altitude
‐ The distance to the nearest runway threshold
‐ The ground speed
‐ The turn rate.

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38
Q

TAD and TCF functions operate with the use of the pure lateral ___ position. The FMS1 position provides the backup.

A

GPS

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39
Q

If the FMGC detects low-navigation accuracy, then the enhanced modes of the EGPWS are ___ . The 5 GPWS modes remain active.

A

automatically deactivated

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40
Q

TERRAIN CAUTION AND WARNING ENVELOPE
VERTICAL ENVELOPE
Terrain Floor varies with distance and altitude
to nearest airport.
Warning and Caution Distances vary with
ground speed and turn rate. Warning Distance Is
Approx. ___ . Caution Distance Is Approx. ___ .

A

30 Seconds / 60 Seconds

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41
Q

TERRAIN CAUTION AND WARNING ENVELOPE
HORIZONTAL ENVELOPE
During turns, the envelope is displaced to look along the aircraft flight path.
Corridor of ___ NM & 3° on each side from the

A

0.25 NM

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42
Q

TERRAIN CLEARANCE FLOOR (TCF)
The TCF function computes a terrain clearance envelope around the airport runway. This function triggers an alert if the terrain clearance is not sufficient (even when the aircraft is in landing configuration). This function provides

A

an enhanced GPWS mode 4.
The TCF function also protects against an attempt to land where there is no airfield.

43
Q

TERRAIN CLEARANCE FLOOR (TCF)
The TAWS database includes the applicable TCF envelope for each airport runway that has terrain data, and that is longer than

A

3 500 ft.
The TCF function is active during all the following flight phases: Takeoff, cruise and approach.

44
Q

If the aircraft descends below the protection envelope, both of the following alerts are triggered:
‐ The ___ aural alert, if the aircraft enters the envelope
If the aircraft continues to descend below the envelope, the alert is triggered one time for every 20 % degradation in radio altitude
‐ The ___ visual alert on the PFD.

A

“TOO LOW TERRAIN”

45
Q

RUNWAY FIELD CLEARANCE FLOOR
The Runway Field Clearance Floor (RFCF) provides an additional protection envelope for runways that are at an elevation that is

A

significantly more than the surrounding terrain.

If the aircraft descends below this protection envelope, the “TOO LOW TERRAIN” aural and visual alerts are triggered.

46
Q

RUNWAY FIELD CLEARANCE FLOOR
The envelope is a circular band that starts within a specific distance of the runway. The width of this circular band depends on the runway. The envelope is based on both the geometric altitude and the runway elevation.

A
  • 5 NM from Runway End
  • 300 ft Above Runway
47
Q

Note:
If ___ , only GPWS mode 5 is lost. The NAV GPWS FAULT alert does not trigger.
On ground, the GPWS FAULT light turns on.
In flight, the GPWS FAULT light does not turn on, while GPWS modes 1 to 4 are operative.

A

ILS 1 fails

48
Q

GPWS
PULL UP – GPWS pb
1. If the flight crew briefly presses the PULL UP – GPWS pb when mode 5 alert is heard, the GPWS light

A

goes off and the aural alert stops.

49
Q

GPWS
PULL UP – GPWS pb
2. On the ground only, the flight crew presses this pb to ___

A

test the GPWS

50
Q

GPWS
TERR ON ND pb
The terrain and obstacles image appears on the ND if:
‐ The aircraft is within ___ , and
‐ The TERR ON ND pb is passed, or automatically, in case of terrain caution(warning)
alerts

A

2 000 ft above the terrain

51
Q

ROW/ROP
The ROPS is designed to alert the flight crew in the case of potential runway overrun situation for dry and wet runway. The ROPS is composed of two functions:

A

‐ The ROW function. It automatically arms at 400 ft AGL and works until start of braking,
‐ The ROP function. It works from start of braking until the aircraft stops.

52
Q

The ROW/ROP functions compute both the wet and dry landing distances for the current conditions. The system then compares these values with the LDA of the landing runway. To detect the landing runway, the ROW/ROP functions use the

A

TAWS runway database and the current aircraft position and track.

53
Q

ROW/ROP
During final approach:
‐ The detection starts from ___ , then
‐ The ROW function arms at ___ .

A

2 000 ft / 400 ft

54
Q

ROW/ROP
The landing runway detection is continuously updated several times per second, including below ___ when the ROW function is armed.

A

400 ft

55
Q

The ROW/ROP functions compute both the wet and dry landing distances real time, and consider:

A

‐ All landing weight and CG ranges (this includes overweight landing)
‐ Both landing configurations (CONF 3 and CONF FULL)
‐ LDA
‐ All wind conditions
‐ Dry and wet runway conditions
‐ No failure that affects landing performance ‐ 15 % safety margin.

56
Q

The flight crew uses the runway condition selector to set the runway condition to WET or DRY.
If a risk of overrun is detected (computed landing distances are more than the LDA) the ROW/ROP triggers:

A

‐ Visual alert messages displayed on the PFDs
‐ Aural alert messages provided through loudspeakers.

57
Q

ROW FUNCTION
The ROW function provides enhanced flight crew awareness about

A

the approach stabilization and the capability to land on available landing distance.

58
Q

ROW ARMING
During the approach, the ROW function detects the landing runway according to the aircraft position, and the TAWS runway database.
At 400 ft AGL, the ROW function automatically arms, and starts to compute both the wet and dry landing distances, depending on flight crew selection.
The ROW function computes the landing distance with the following assumptions:

A

‐ Maximum manual brake pressure
‐ Idle reverser thrust for the computation for dry runway
‐ Maximum reverser thrust for the computation for wet runway.

59
Q

ROW ACTIVATION
Below 400 ft, if the computation for landing distance is more than the LDA:

Below 200 ft, if the computation for landing distance is more than the LDA:

A

‐ The RWY TOO SHORT (AMBER) message is displayed on both PFDs. This message flashes for 9 s
and then remains steady. This message is not associated with an aural alert.

‐ The RWY TOO SHORT (RED) message is displayed on both PFDs. This message flashes for
9 s and then remains steady. IN ADDITION, A REPETITIVE AURAL ALERT “RUNWAY TOO SHORT” TRIGGERS.

60
Q

ROP FUNCTION
The ROP function provides enhanced flight crew awareness about the

A

deceleration and capability to stop before the end of the runway.

61
Q

ROP ACTIVATION
On ground, the ROP function computes the braking distance for the current aircraft and runway conditions. If current braking performance is not sufficient to stop on LDA, it triggers visual and aural alerts.
As soon as an overrun situation is detected ___ and ___ messages are displayed on both PFDs. They flash for 9 s and then remain steady.

A

MAX BRAKING / MAX REVERSE

62
Q

ROP ACTIVATION
As soon as an overrun situation is detected MAX BRAKING and MAX REVERSE messages are displayed on both PFDs. They flash for 9 s and then remain steady.

At the same time, the aural alert “BRAKE, MAX BRAKING, MAX BRAKING’’ is triggered and continues until the system detects ___

When the flight crew applies maximum manual brake pressure, the aural alert “SET MAX REVERSE” is triggered and continues until the system detects ___

A
  • maximum manual brake pressure.
  • maximum reverse thrust.
63
Q

ROP ACTIVATION
The aural alert ___ has priority over “SET MAX REVERSE”.

A

“BRAKE, MAX BRAKING, MAX BRAKING”

64
Q

Below 80 kt, the aural alert ___ is triggered, if the system still detects overrun situation with maximum manual brake pressure and maximum reverse thrust.
If the overrun situation is no longer detected, alerts are no longer triggered.

A

“KEEP MAX REVERSE”

65
Q

ROW/ROP INHIBITION
The flight crew can use the ___ to inhibit the ROW/ROP function

A

ROW/ROP pb-sw

‐ No message displayed on the PFD
‐ No audio alert
‐ No runway condition displayed on the ND
‐ ROW/ROP runway condition selector inhibited.

66
Q

ROW/ROP INHIBITION
In any case, the ROP function is inhibited when the ground speed decreases below ___

A

30 kt.

67
Q

ROW/ROP - CONTROLS AND INDICATORS
ROW/ROP pb-sw location ___

A

OVHD PANEL
SURV (next to EVAC)

68
Q

The Traffic alert and Collision Avoidance System (TCAS):

A

‐ Detects and displays surrounding aircraft that have a transponder
‐ Calculates and display possible collision threats
‐ Triggers vertical speed orders, in order to avoid collisions.

69
Q

The TCAS detection capability is limited to intruders flying within a maximum range of ___ on either sides and approximately 30 NM to 80 NM longitudinally (depending on aircraft configuration and external conditions), and within a maximum altitude range of ___ above and below the

A

30 NM / 9 900 ft

70
Q

The TCAS then calculates the intruder trajectory, the Closest Point of Approach (CPA), and the estimated time (TAU) before reaching the CPA.
The TAU is the ratio between the distance that separates both aircraft, and the sum of their speed.
If the TCAS detects that the trajectory of an intruder may be a collision threat, it triggers:

A

‐ Audio and visual indicators
‐ Vertical speed orders, to ensure a sufficient trajectory separation and a minimal vertical speed
variation considering all intruders.

71
Q

TCAS system includes:

A

‐ A single channel TCAS computer
‐ Two TCAS antennas
‐ Two mode S ATC transponders, one active the other in standby
‐ An ATC/TCAS control panel.

72
Q

Two mode S ATC transponders, one active the other in standby
These transponders allow:

A
  • Interface between the ATC/TCAS control panel and the TCAS computer
  • Communication between the aircraft and intruders equipped with a TCAS system.
73
Q

INTRUDER DETECTION CATEGORIES
The TCAS divides the space surrounding the aircraft into the following four zones, in order to evaluate and categorize possible collision threats:

A

‐ Resolution Advisory (RA)
‐ Traffic Advisory (TA)
‐ Proximate intruders
‐ Other intruders.

74
Q

INTRUDER DETECTION CATEGORIES
Other intruders:
‐ No collision threat
‐ Any non proximate, TA, RA within the surveillance envelope (lateral range: Closer than ___ )

A

30 NM

(Hollow Diamond)

75
Q

INTRUDER DETECTION CATEGORIES
Proximate:
‐ No collision threat
‐ Intruder in the vicinity of
the A/C (closer than ___ laterally and ___ vertically)

A

6 NM / ±1200 ft

(Solid Diamond)

76
Q

INTRUDER DETECTION CATEGORIES
Traffic Advisory (TA):
‐ Potential collision threat ‐ TAU is about ___

A

40 s

(Amber Circle)

77
Q

INTRUDER DETECTION CATEGORIES
Resolution Advisory (RA):
‐ Real collision threat ‐ TAU is about ___

A

25 s

(Red Square)

78
Q

TA/RA thresholds

A

As Per Graph
FCOM
AIRCRAFT SYSTEMS SURVEILLANCE
TCAS - DESCRIPTION

79
Q

TCAS MODES
The TCAS has three different modes of operations that can be selected on the ATC / TCAS control panel:

A

‐ The Traffic Advisory/Resolution Advisory (TA/RA) mode
‐ The Traffic Advisory Only (TA ONLY) mode
‐ The standby (STBY) mode.

80
Q

TRAFFIC ADVISORY/RESOLUTION ADVISORY (TA/RA) MODE
The TA/RA mode is the normal TCAS operating mode that enables:

A

‐ The ND to display all intruders
‐ The PFD to display the vertical speed orders that indicate the vertical direction that the aircraft
should take, in order to avoid a collision.

81
Q

TRAFFIC ADVISORY ONLY (TA ONLY) MODE
The TA ONLY mode can be selected:

A

‐ Manually in case of aircraft degraded performance (engine failure, landing gear extended), or in
specific airports, and for specific procedures (identified by operators) that may provide RA that
are neither wanted nor appropriate (e.g. closely-spaced parallel or converging runways)
‐ Automatically, if TA/RA mode is previously selected and:
* The windshear alert is triggered
* The stall warning is triggered
* GPWS alerts are triggered
* Aircraft is below 1 000 ft AGL.

82
Q

When the TCAS is operating in TA ONLY mode:

A

‐ All RAs are inhibited and converted into TAs
‐ TA threshold is set to TAU ≤20 s, irrespective of the aircraft altitude
‐ No vertical speed advisories are indicated on the PFDs
‐ “TA ONLY” is displayed on the NDs

83
Q

TCAS
STANDBY MODE
In the standby mode, the advisory generation and surveillance functions are not active. The TCAS does not trigger any alert. No TCAS information can be displayed on

A

the PFDs and NDs.

84
Q

AP/FD TCAS
The AP/FD TCAS mode is a vertical guidance mode of the AP/FD. In the case the TCAS generates a Resolution Advisory (RA) alert, this mode automatically engages to assist the flight crew to follow the RA orders, and to revert toward initial trajectory:

A

‐ Automatically if the AP is engaged, or
‐ Manually with the guidance of the Flight Director (FD), if the AP is not engaged.

85
Q

When the TCAS is operating in ___ mode, the AP/FD TCAS mode is inhibited.

A

TA ONLY

86
Q

INTRUDER DETECTION
Based on the received information from the intruders, the TCAS may generate the following sequence of alerts:

 If the TCAS considers the intruder to be a possible collision threat

 If the TCAS considers the intruder to be a real collision threat:

 When the TCAS considers that there is no more collision threat:

A

‐ It generates a visual and aural Traffic Advisory (TA).
‐ In that case, the AP/FD TCAS mode automatically arms: TCAS appears on the FMA to
inform the flight crew that the AP/FD TCAS mode will be available in the case a Resolution Advisory (RA) is subsequently triggered.

‐ It generates a visual and aural Resolution Advisory (RA).
‐ The AP/FD TCAS mode automatically engages: TCAS appears on the FMA. The flight crew
has vertical guidance to fly the RA orders, automatically with the AP/FD, or manually with
the FDs only (if AP was not engaged).
‐ If the A/THR is disconnected, it automatically becomes armed or active, depending on the
thrust lever position. When active, the speed/Mach mode engages, and the speed/Mach control becomes selected.
‐ The vertical speed scale on the PFD indicates the vertical speed range within which the aircraft should fly.

‐ It triggers the “CLEAR OF CONFLICT” aural alert.
‐ In most of the cases, the AP/FD TCAS mode automatically reverts to V/S mode: The
vertical speed target leads the aircraft toward the FCU selected altitude.
If the altitude capture conditions are met at the clear of conflict, the AP/FD TCAS mode can revert to an altitude acquire, or an altitude hold mode.

87
Q

TCAS ADVISORY INHIBITION
Some advisories are inhibited depending on the aircraft altitude:
‐ All intruders flying below 380 ft AGL when the own aircraft altitude is

A

below 1 750 ft AGL in climb
or 1 650 ft AGL in descent

88
Q

TCAS ADVISORY INHIBITION
Some advisories are inhibited depending on the aircraft altitude:
‐ All TA aural messages

A

below 600 ft AGL in climb or below 400 ft AGL in descent

89
Q

TCAS ADVISORY INHIBITION
Some advisories are inhibited depending on the aircraft altitude:
‐ All RA aural messages

A

below 1 100 ft AGL in climb or 900 ft AGL in descent. In this case, the RA
are converted into TA.

90
Q

TCAS ADVISORY INHIBITION
Some advisories are inhibited depending on the aircraft altitude:
‐ “Descend” RA

A

below 1 200 ft AGL in climb or 1 000 ft AGL in descent

91
Q

TCAS ADVISORY INHIBITION
Some advisories are inhibited depending on the aircraft altitude:
‐ “Increase Descent” RA

A

below 1 650 ft AGL in climb or 1 450 ft AGL in descent

92
Q

TCAS ADVISORY INHIBITION
Some advisories are inhibited depending on the aircraft altitude:
‐ The AP/FD TCAS  flight guidance mode is inhibited

A

below 900 ft.

93
Q

TCAS INTRUDER WITH NO REPORTED ALTITUDE
For intruders that do not report their altitude:
‐ The relative altitude does not appear on ND
‐ The TCAS never triggers any RA
‐ The TCAS inhibits the TA when own aircraft altitude is ___

A

above 15500 ft

94
Q

ATC/TCAS PANEL
TRAFFIC sel
THRT : Proximate and other intruders are displayed only if a TA or RA is present, and they are within

A

2 700 ft above and 2 700 ft below the aircraft.

95
Q

ATC/TCAS PANEL
TRAFFIC sel
ALL : Proximate and other intruders are displayed even if no TA or RA is present (full time function). The altitude range is

A

–2700 ft to +2 700 ft.

96
Q

ATC/TCAS PANEL
TRAFFIC sel
ABV : Proximate and other intruders are displayed even if no TA or RA is present (full time function) except that the other intruders are displayed if within

A

9 900 ft above the aircraft and 2 700 ft below.

97
Q

ATC/TCAS PANEL
TRAFFIC sel
BLW : Proximate and other intruders are displayed even if no TA or RA is present (full time function) except that the other intruders are displayed if within

A

9 900 ft below the aircraft and 2 700 ft above.

98
Q

The traffic is displayed in all ROSE modes and ARC mode when 10, 20 or 40 NM range is selected. Only the ___ most threatening intruders are displayed.

A

8

99
Q

TCAS ND INDICATIONS
Vertical speed arrow
Displayed only if the intruder V/S > ___

A

500 ft/min.

100
Q

TCAS MESSAGES
Mode and range messages
Following messages can be displayed to draw pilot’s attention:
TCAS : REDUCE RANGE : Displayed when a TA or RA is detected and ND range above ___ .
TCAS : CHANGE MODE : Displayed when a TA or RA is detected and ND mode is ___ .

A

40 NM / PLAN

101
Q

PFD INDICATIONS
In case of RA detection, the vertical speed scale becomes ___ and the PFD presents vertical orders on the vertical speed scale. The vertical speed scale background is normally ___ , but may be partially replaced by green and/or red areas.

A

rectangular / grey

102
Q

TA/RA detection is associated with the following AURAL MESSAGES:
“TRAFFIC TRAFFIC” :

A

Only in case of TA detection.

103
Q

TA/RA detection is associated with the following AURAL MESSAGES:
“LEVEL OFF, LEVEL OFF” :

A

Set the Vertical Speed to 0.

104
Q

TA/RA detection is associated with the following AURAL MESSAGES:
“CLEAR OF CONFLICT” :

A

The range increases and separation is adequate. Return to assigned clearance.

A320/ FCOM (32 decks)

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