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A320 > Navigation > Flashcards

Navigation Flashcards

0
Q

When the mode selectors are positioned to NAV during a full alignment, what indication should be noted on the panel?

A

The ON BAT illuminates momentarily followed by three align lights on each respective IR

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1
Q

How many ADIRUs are on the aircraft?

A

3

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2
Q

What does the ON BAT light indicate?

A

One or more IRs is being supplied only by the aircraft battery. It illuminates momentarily at the beginning of a full alignment

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3
Q

If the ADIRS switches are already in NAV, how do you accomplish a rapid alignment?

A

Select the Mode selectors OFF then back on within 5 seconds and select ALIGN IRS on INIT page.

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4
Q

What would occur if the pilot were to take longer than 5 seconds to cycle any of the Mode selectors from OFF back to NAV?

A

The affected IRS would initiate a full alignment.

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5
Q

Can the present position be entered through the ADIRU panel or must we use the MCDU?

A

Present position may be entered in the ADIRU through the numeric keypad

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6
Q

Does the center OFF/1/2/3 switch turn the GNADIRS unit off?

A

No, only the upper display

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7
Q

What would cause an ADIRS ALIGN light to flash?

A

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

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8
Q

The entered position causes the ALIGN lights to flash. If the coordinates are correct, how is the problem corrected?

A

Check the city pairs and re-enter if necessary

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9
Q

What would a steady FAULT light in the #1 IR indicate?

A

The respective IR is lost

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10
Q

Would a fault in the #1 IR cause the #1 ADR to fail?

A

No, they are independent systems

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11
Q

What would a flashing IR FAULT light indicate?

A

Attitude and heading may be recovered in the ATT mode

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12
Q

Are we allowed to pushback during the alignment process?

A

No, movement will cause the system to fault.

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13
Q

After selecting the IR MODE selectors to NAV, when should you select ALIGN IRS on the INIT A page?

A

Immediately after selecting NAV to avoid excessive ADIRS drift.

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14
Q

If you were to rotate the #1 IR mode rotary switch to OFF, would that affect the #1 ADR?

A

Yes, although they are independent systems, they share an on/off switch.

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15
Q

If IR #1 were to fault in flight, what info would be lost on the #1 PFD? How is it displayed?

A

Attitude and heading info is lost. Red ATT and HDG flags replace attitude and heading info on the PFD.

16
Q

What IR info may be recovered if an IR fault lit is flashing?

A

Attitude and heading may be possibly recovered by turning the rotary IR selector to ATT.

17
Q

If IR #1 were to fault in flight, the DDRMI will show a compass card flag. Why?

A

The DDRMI will show a compass card flag because IR #1 drives the DDRMI compass card until it is switched

18
Q

Are the IR track, wind, and heading displayed on the IR overhead panel relative to true or magnetic?

A

True

19
Q

If the GPWS SYS pb is selected OFF, what is inhibited?

A

All basic GPWS alerts (modes 1-5) are inhibited.

20
Q

What is the purpose of the FLAP MODE pb?

A

To inhibit nuisance warnings when ECAM calls for a reduced flap setting for landing.

21
Q

What is the purpose of the LDG FLAP 3 pb?

A

It is used when making a landing in CONFIG 3.

22
Q

If a TERR fault light illuminated, would that affect the basic EGPWS modes?

A

No

23
Q

Where is ILS 1 and 2 info displayed?

A

ILS1 is displayed on the Capt PFD and the FO ND. ILS 2 is displayed on the FO PFD and the Capt ND.

24
Q

Radio height is displayed on the PFD below what altitude?

A

Below 2,500 AGL

25
Q

What info from the ADR is displayed on the PFD?

A

Airspeed and altitude.

26
Q

When is side stick position and max side stick deflection displayed on the PFD?

A

On the ground after the first engine start

27
Q

If Radio Altimeter 1 fails, is radio altitude info lost on either PFD?

A

No, the remaining Radio Altimeter height will be displayed on both PFDs.

28
Q

What info do the FACs provide that is indicated on the PFD?

A

On the PFD, all characteristic speeds are FAC generated: Vls max, Vfe, ALPHA MAX, ALPHA PROT, F and S speeds, speeds, speed trend, etc.

29
Q

Can the loudness of the aural alert and voice messages be controlled by the loudspeaker volume knob?

A

No

30
Q

With the TERR ON ND pb OFF, what happens if a terrain caution is generated?

A

Terrain data is automatically displayed on the ND and the ON light illuminates.

31
Q

How can the pilot differentiate terrain from radar sweeps?

A

TERR sweeps from the center outward

32
Q

Does the EGPWS use radar signals to “ground map” terrain?

A

No, it uses a worldwide terrain database

A320 (17 decks)

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