Airbus A320 - Navigation

What causes the Back Up Speed Scale (BUSS) to automatically appear?

ADR 1+2+3 FAULT/OFF.

ADR 1+3 FAULT/OFF.

ADR 1+2 FAULT/OFF.

ADR 2+3 FAULT/OFF.

Correct! Wrong!

What are the functions of the Air Data Modules (ADMs)?

Convert initial data from the laser gyro system to numerical data for the ADIRUs.

Convert pneumatic pitot/static data from probes to numerical data for the ADIRUs.

Correct! Wrong!

An air data module is a component of the navigation system. Each unit converts pneumatic (air pressure) information from a pitot tube or a static port into numerical information which is sent on a data bus. This pressure information is received and processed by the Air Data Reference (ADR) component of the Air Data Inertial Reference Unit (ADIRU).This processed information is then sent to one or more display management computers that present information on the cockpit's primary flight display. Airspeed information is also sent to the flight computers and other electronics,including the autoflight subsystem

What data do the IRs (Inertial Reference) directly gather?

Attitude, heading/track, aircraft position, acceleration, vertical speed, ground speed.

Attitude, heading/track, aircraft position, acceleration, vertical speed.

Attitude, heading/track, aircraft position, acceleration.

Attitude, heading/track, aircraft position, acceleration, vertical speed, ground speed, radio altitude.

Correct! Wrong!

The flight crew interfaces with the FMGS using the:

All statements are correct.

Thrust Levers.

MCDU.

FCU.

Correct! Wrong!

How does the FMGS derive Vapp?

Vapp=VLS+10+1/2 surface headwind component.

Vapp=VLS+10+1/3 surface headwind component.

Vapp=VLS+5+(1/3 surface headwind component).

Vapp=VLS+5+1/2 surface headwind component.

Correct! Wrong!

What are the different types of flight guidance?

Slaved and managed.

Managed and selected.

Automatic and manual.

Managed and manual.

Correct! Wrong!

GPS1 supplies ADIRU 1 and GPS 2 supplies ADIRU 2. What supplies ADIRU 3?

GPS 1

GPS 1 or GPS 2.

GPS 2

GPS 1 and GPS 2.

Correct! Wrong!

All navaids are normally autotuned by the:

ADIRU.

FMGC.

MCDU.

MCDU and ADIRU.

Correct! Wrong!

The FWC generates a synthetic voice for radio height announcement below 2,500 ft. These announcements come through the cockpit loudspeakers, even if the speakers are turned off.

False.

True.

Correct! Wrong!

A 'fast align' of the IRs can be achieved by selecting the rotator switches OFF and then back to:

NAV within 10 seconds.

ATT within 10 second.

NAV within 5 seconds.

ATT within 5 seconds

Correct! Wrong!

The ISIS is connected to:

AC ESS BUS and HOT BUS 2.

AC BUS 1 and HOT BUS 2.

DC ESS BUS and HOT BUS 1.

DC BUS 2 and HOT BUS 1

Correct! Wrong!

Use of the ISIS bugs function is not recommended because, in the event that both PFDs are lost in flight, when the ISIS bugs were previously set for takeoff, then for the approach, the bugs would remain at the takeoff characteristic speed settings.

False.

True.

Correct! Wrong!

The aircraft has _ Multi Mode Receivers (MMRs) that receive GPS data from _ satellites.

4 / 28

2 / 24

2 / 28

4 / 24

Correct! Wrong!

On the ground, the FMGC displays the position of the aircraft using:

IRS data only.

GPS data only.

IRS corrected by GPS.

GPS corrected by IRS

Correct! Wrong!

How many ADIRUs (Air Data Inertial Reference Units) does the aircraft have?

Three (two active, one back up).

Two (one active, one backup).

Two (all active).

Three (all active).

Correct! Wrong!

The ON BAT light on the ADIRS CDU illuminates:

Only when all IRUs are on battery power.

When an IRU fault is detected.

When one or more ADIRUs is/are supplied by airplane battery only.

Correct! Wrong!

What data does the Back Up Speed Scale (BUSS) use to estimate airspeed?

Static port data.

Pitot probe data.

GPS data.

AOA vane data.

Correct! Wrong!

When flying at cruise altitude, the aircraft navigates using radio navaids only.

True.

False.

Correct! Wrong!

The selected database date has expired. When must the active data base be changed?

Prior to entering the preflight data.

The following calendar day.

Anytime prior to takeoff.

Correct! Wrong!

What is managed climb speed below 10,000 feet?

Green dot.

Best rate of climb speed.

250 kt.

210 kt.

Correct! Wrong!

The BUSS (Back Up Speed Scale) is always reversible.

False.

True.

Correct! Wrong!

You have been cleared to intercept the localizer. You have pushed the LOC push button on the FCU. If all necessary data has been entered in the MCDU, can you now engage both autopilots?

No, the LOC must capture before both autopilots will engage.

Yes.

No, the APPR pushbutton must be pushed first.

Correct! Wrong!

ADIRU 3 is supplied by all the standby probes and which primary probe?

CM1’s pitot.

CM1’s AOA.

CM1’s TAT.

CM1’s Static Port.

Correct! Wrong!

The IR alignment count down stops one minute prior to accomplishment and the ALIGN lights are flashing. Why does it happen?

It is an indication that there is a disagreement between the IRs and the alignment must be restarted.

It is an indication that alignment has stopped as the present position data has not been entered from the FMGS.

It is an indication that the alignment is complete but must be acknowledged.

Correct! Wrong!

What is the minimum RNP accuracy with GPS PRIMARY in the Terminal area?

0.3 NM.

0.5 NM.

1 NM.

3 NM.

Correct! Wrong!

The aircraft has two radio altimeters (RA). CAPT PFD displays the RA1 height, and the F/Os PFD displays the RA2 height. If one RA fails, both PFDs display the height from the remaining RA.

False.

True.

Correct! Wrong!

The takeoff bias is:

Retained for the remainder of the flight.

Replaced when a bias is computed based on radio position.

Blended out over the next 30 minutes.

Blended out over the next 60 minutes.

Correct! Wrong!

The ADIRS 'ON BAT' light on the overhead panel indicates:

The battery test is being performed at the beginning of alignment or the batteries are supplying all ADIRUs.

A battery test is being performed at the beginning of alignment.

The batteries are supplying all ADIRUs.

A battery test is being performed at the beginning of alignment or the batteries are supplying at least one ADIRU.

Correct! Wrong!

When the thrust levers are moved to the takeoff position, the FMGS updates its position at takeoff using:

The navigation database and the takeoff runway entered into the MCDU by the pilot.

IRS/DME/DME positioning.

IRS/ILS/DME positioning.

The VOR/DME currently tuned.

Correct! Wrong!

The ISIS LS shall not be used for takeoff using the localizer of the opposite runway, or for a back-course localizer approach. The LOC deviations are given in the wrong sense.

True.

False.

Correct! Wrong!

With the DATA selector set to HDG, the time remaining until the completed IRS alignment is displayed on the control display. How long does it take normally?

Approximately 10 minutes.

Approximately 1 minute.

Approximately 3 minutes.

Approximately 7 minutes.

Correct! Wrong!

Each IR receives input from both GPS simultaneously.

False.

True.

Correct! Wrong!

What does the red area indicate on the BUSS (Back Up Speed Scale)?

Below VSW.

Below Alpha Max.

Below VLS.

Below Alpha prot.

Correct! Wrong!

Can the flight crew depress the RMP ON NAV pushbutton and use the RMP for navigation simultaneously with FMGC autotuning?

Yes, because the opposite FMGC will continue to autotune navaids.

No, RMP backup tuning supersedes the autotuning function of both FMGCs.

Correct! Wrong!

What ADIRU (Air Data Inertial Reference Unit) selection modes are there ?

NAV, STBY, OFF.

ATT, STBY, OFF.

NAV, ATT, OFF.

ON, STBY, OFF.

Correct! Wrong!

Each ADIRU (Air Data Inertial Reference Unit) is comprised of an ADR (Air Data Reference) and IR (Inertial Reference). Can these work separately of each other in the case of a failure?

Yes.

No.

Correct! Wrong!

The Flight Path Vector (FPV) is a function of the:

ADRs.

IRs.

Correct! Wrong!

GPWS aural and visual warnings cannot be inhibited.

False

True

Correct! Wrong!

What computer(s) perform(s) the GP-IRS hybrid position calculation?

MMR 1+2.

FMGC 1.

ADIRS 1 + 2 + 3

FMGC 2.

Correct! Wrong!

When electrical power is lost, ADIRU 1:

Remains on battery power for 5 minutes until electrical power is restored.

Remains on battery power until electrical power is restored.

Is lost until electrical power is restored.

Remains on battery for 3 minutes until electrical power is restored.

Correct! Wrong!

The Back Up Speed Scale (BUSS) is available:

Above FL250.

Below FL200.

Below FL250.

Above FL200.

Correct! Wrong!

The ISIS gathers inputs from:

ADIRU 3 only.

ADIRU 1 + 3.

ADIRU 1 only.

ADIRU 1 + 2.

Correct! Wrong!

When the aircraft is on ground and if at least one ADIRU is supplied by aircraft batteries:

All statements are correct.

An external horn sounds

The ADIRU and AVNCS light comes on amber on the EXTERNAL POWER panel.

Correct! Wrong!

How many ADMs are there?

Four.

Six.

Two.

Eight.

Correct! Wrong!

When electrical power is lost, ADIRUs 2 and 3:

Remain on battery power until electrical power is restored.

Remain on battery power for 5 minutes until electrical power is restored.

Remain on battery for 3 minutes until electrical power is restored.

Are lost until electrical power is restored.

Correct! Wrong!

What does the Back Up Speed Scale (BUSS) use to indicate altitude?

AOA vane data.

Static port data.

Pitot probe data.

GPS data.

Correct! Wrong!

What is the minimum RNP accuracy with GPS PRIMARY on approach?

1 NM.

2 NM.

0.3 NM.

0.5 NM.

Correct! Wrong!

Selection of the correct takeoff runway on the FMGC prior to each flight is necessary because:

The FADEC needs it to know how much to reduce the thrust for takeoff.

Selection of the correct runway insures proper pressurization.

Selection of the correct runway permits the FMGC to update its position at takeoff.

Correct! Wrong!

One A/P can be engaged on the ground if the engines are not running.

This A/P will disengage when speed is sensed at more than 10 kt.

This A/P will disengage when taxi starts.

This A/P will disengage when one engine is started.

This A/P will disengage when both engines are started.

Correct! Wrong!

A flashing white 'ALIGN' indication on the ADIRS panel means:

IR alignment fault, or no present position entry after 10 min, or difference between position at shutdown and entered position exceeds 1 degree of latitude or longitude.

The respective IR is lost or there is an alignment fault

Alignment is not available.

No present position entry after 10 min or the respective IR is lost.

Correct! Wrong!

When are the Radio Altimeters self-tested?

When the gear is selected down.

During first engine start.

During second engine start.

At AC electrical power up.

Correct! Wrong!

The loudspeaker announces RETARD at:

20 ft or at 10 ft if autothrust is active and one autopilot is in LAND mode.

Between 15 and 20 ft with or without Autothrust.

20 ft at all times.

Correct! Wrong!

With a single RA failure:

Auto callouts are lost.

All statements are correct.

APPR pushbutton cannot be used.

Both PFDs share a single RA.

Correct! Wrong!

Which of the following navaids can be autotuned?

VOR and DME.

All statements are correct.

ILS and ADF (for NDB data base approaches).

Correct! Wrong!

What data do the ADRs (Air Data Reference) directly gather?

Airspeed/Mach, temperature, barometric altitude, AOA, back-up vertical speed.

Airspeed/Mach, temperature, barometric altitude, AOA, ground speed.

Airspeed/Mach, temperature, barometric altitude, AOA.

Airspeed/Mach, temperature, barometric altitude.

Correct! Wrong!

What function does 'ATT' perform on the ADIRS rotary selector?

Used to switch the IR to the standby IR’s data.

Used to retain attitude + position information with an IR fault.

Used to fast align an IR in the air only.

Used to retain attitude + heading information with an IR fault.

Correct! Wrong!

What is the minimum RNP accuracy with GPS PRIMARY for departure and enroute?

0.3 NM.

3 NM.

1 NM.

0.5 NM.

Correct! Wrong!

The weather radar image can be displayed on which modes of the ND?

Rose NAV or VOR.

Rose NAV or ARC.

All modes except Plan.

Rose VOR or Rose ILS.

Correct! Wrong!

An ADR1 failure results in a loss of predictive GPWS functions:

True.

False.

Correct! Wrong!

Overspeed warnings are a function of the:

ADRs (Air Data Reference).

IRs (Inertial Reference).

Correct! Wrong!

The ISIS uses:

The primary accelerometers and gyrometers to display the vertical speed of the aircraft.

Its own set of accelerometers and gyrometers to display the vertical speed of the aircraft.

The primary accelerometers and gyrometers to display the attitude of the aircraft.

Its own set of accelerometers and gyrometers to display the attitude of the aircraft.

Correct! Wrong!

The IR will experience drift in 'ATT' position and it will need a periodic heading update.

True.

False.

Correct! Wrong!

Airbus A320 – Navigation

Quiz

Airbus A320 - Navigation

What causes the Back Up Speed Scale (BUSS) to automatically appear?

What are the functions of the Air Data Modules (ADMs)?

What data do the IRs (Inertial Reference) directly gather?

The flight crew interfaces with the FMGS using the:

How does the FMGS derive Vapp?

What are the different types of flight guidance?

GPS1 supplies ADIRU 1 and GPS 2 supplies ADIRU 2. What supplies ADIRU 3?

All navaids are normally autotuned by the:

The FWC generates a synthetic voice for radio height announcement below 2,500 ft. These announcements come through the cockpit loudspeakers, even if the speakers are turned off.

A 'fast align' of the IRs can be achieved by selecting the rotator switches OFF and then back to:

The ISIS is connected to:

Use of the ISIS bugs function is not recommended because, in the event that both PFDs are lost in flight, when the ISIS bugs were previously set for takeoff, then for the approach, the bugs would remain at the takeoff characteristic speed settings.

The aircraft has _____ Multi Mode Receivers (MMRs) that receive GPS data from _____ satellites.

On the ground, the FMGC displays the position of the aircraft using:

How many ADIRUs (Air Data Inertial Reference Units) does the aircraft have?

The ON BAT light on the ADIRS CDU illuminates:

What data does the Back Up Speed Scale (BUSS) use to estimate airspeed?

When flying at cruise altitude, the aircraft navigates using radio navaids only.

The selected database date has expired. When must the active data base be changed?

What is managed climb speed below 10,000 feet?

The BUSS (Back Up Speed Scale) is always reversible.

You have been cleared to intercept the localizer. You have pushed the LOC push button on the FCU. If all necessary data has been entered in the MCDU, can you now engage both autopilots?

ADIRU 3 is supplied by all the standby probes and which primary probe?

The IR alignment count down stops one minute prior to accomplishment and the ALIGN lights are flashing. Why does it happen?

What is the minimum RNP accuracy with GPS PRIMARY in the Terminal area?

The aircraft has two radio altimeters (RA). CAPT PFD displays the RA1 height, and the F/Os PFD displays the RA2 height. If one RA fails, both PFDs display the height from the remaining RA.

The takeoff bias is:

The ADIRS 'ON BAT' light on the overhead panel indicates:

When the thrust levers are moved to the takeoff position, the FMGS updates its position at takeoff using:

The ISIS LS shall not be used for takeoff using the localizer of the opposite runway, or for a back-course localizer approach. The LOC deviations are given in the wrong sense.

With the DATA selector set to HDG, the time remaining until the completed IRS alignment is displayed on the control display. How long does it take normally?

Each IR receives input from both GPS simultaneously.

What does the red area indicate on the BUSS (Back Up Speed Scale)?

Can the flight crew depress the RMP ON NAV pushbutton and use the RMP for navigation simultaneously with FMGC autotuning?

What ADIRU (Air Data Inertial Reference Unit) selection modes are there ?

Each ADIRU (Air Data Inertial Reference Unit) is comprised of an ADR (Air Data Reference) and IR (Inertial Reference). Can these work separately of each other in the case of a failure?

The Flight Path Vector (FPV) is a function of the:

GPWS aural and visual warnings cannot be inhibited.

What computer(s) perform(s) the GP-IRS hybrid position calculation?

When electrical power is lost, ADIRU 1:

The Back Up Speed Scale (BUSS) is available:

The ISIS gathers inputs from:

When the aircraft is on ground and if at least one ADIRU is supplied by aircraft batteries:

How many ADMs are there?

When electrical power is lost, ADIRUs 2 and 3:

What does the Back Up Speed Scale (BUSS) use to indicate altitude?

What is the minimum RNP accuracy with GPS PRIMARY on approach?

Selection of the correct takeoff runway on the FMGC prior to each flight is necessary because:

One A/P can be engaged on the ground if the engines are not running.

A flashing white 'ALIGN' indication on the ADIRS panel means:

When are the Radio Altimeters self-tested?

The loudspeaker announces RETARD at:

With a single RA failure:

Which of the following navaids can be autotuned?

What data do the ADRs (Air Data Reference) directly gather?

What function does 'ATT' perform on the ADIRS rotary selector?

What is the minimum RNP accuracy with GPS PRIMARY for departure and enroute?

The weather radar image can be displayed on which modes of the ND?

An ADR1 failure results in a loss of predictive GPWS functions:

Overspeed warnings are a function of the:

The ISIS uses:

The IR will experience drift in 'ATT' position and it will need a periodic heading update.

The aircraft has _ Multi Mode Receivers (MMRs) that receive GPS data from _ satellites.