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A320 Navigation And Radar Flashcards

1
Q

FATHAG

A

What do the IR’s do

Flight path vector
AC position
Track
Heading
Attitude
Acceleration
Ground speed

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2
Q

BOATS

A

What do the ADR’s do?

Barometric altitude
OAS
Angle of attack
Temperature
Speed

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3
Q

How to fast align the IR’s

A

Turn to off for less than 5 seconds and back to nav. Takes about 3 seconds to align.

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4
Q

How to normally align the IR’s

A

Switching the IRU mode selector to OFF for more than 5 seconds and then back to NAV

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5
Q

What does the ON BAT light mean on the ADIRS?

A
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6
Q

When must a complete alignment be accomplished?

A

Before first flight of the day
Following a crew change
When GPS is not available and NAVAID coverage is poor on the expected route
When GPS is not available and expected flight time exceeds 3 hours
All international and Alaska flights
Flight in class 2 airspace

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7
Q

What does the FMGS do to reduce the pilots workload?

A

The flight management and guidance system provides:
Present position
Lateral and vertical navigation
Flight predictions
Navigation auto tune

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8
Q

What inputs does the FMGS need in order to navigate?

A

-2 flight management and guidance computers
-1 Air data inertial reference system (ADIRS)
-2 radio altimeters
-1 marker beacon receiver
-DME, VOR, and ILS receivers (One ILS receiver is combined with one GPS receiver to from a Multi-Mode receiver (MMR), there are 2 MMR’s on the aircraft)
-Global positioning system

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9
Q

How many VOR, DME, and ILS receivers does the A320 have?

A

2 of each

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10
Q

How many ADF’s do our A320’s have?

A

None of our NEO aircraft have an ADF receiver. And only of few of our CEO’s have 1.

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11
Q

How many frequencies does each of our DME receivers have?

A

5 frequencies. 3 for radio position updating, 1 VOR/DME display, 1 Localizer DME display.

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12
Q

How can you see VOR navigation information?

A

By selecting the ROSE knob to VOR. That will pop up a digital HSI on your ND.

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13
Q

What’s a Multi-Mode Receiver?

A

An MMR is a combined ILS and GPS receiver.

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14
Q

What are the 3 ways to tune radio nav receivers?

A

Auto tuning via the FMGS
Manual tuning via the MCDU RAD NAV page
Manual tuning by using the STBY NAV function on the RADIO MANAGEMENT PANEL’s (RMP’s)

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15
Q

What 4 things does FMGS auto tuning provide?

A

Localizer guidance during takeoff
FMS position updating
En route VOR/DME display
Approach guidance

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16
Q

What does pressing the guarded NAV button on the RMP do?

A

It enable standby tuning of radio nav frequencies and in doing so disables autotuning.

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17
Q

What are the components of the Air Data Inertial Reference System (ADIRS)?

A

It’s composed of 3 ADIRU’s or Air Data Inertial Reference Units. Each ADIRU is separated into AIR DATA Reference information (ADR) and Inertial Reference information (IR).

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18
Q

Which ADIRU provide captain side info? FO side?

A

ADIRU 1 provides captain side data. 2 provides FO side data. 3 is standby.

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19
Q

What does a flashing FAULT light in an IR pushbutton mean?

A

It means that the IRU has lost its present position but attitude and heading may be restored

20
Q

What does a steady FAULT light in an IR pb mean?

A

The respective IR is lost and can’t be recovered

21
Q

Should AC power fail, what provides power to all 3 ADIRU’s?

A

Battery power. If after 5 minutes AC power is restored to the main AC buses, ADIRU 2 and 3 are disconnected from the battery and remain unpowered for the remainder of the flight.

22
Q

What does the illuminated ON BATT light on the ADIRS panel mean?

A

It means that at least one of the ADIRU’s is being powered by the battery instead of AC power. This light will also illuminate temporarily whenever a complete alignment is performed.

23
Q

What does it mean when the IRS IN ALIGN memo flashes green? What about when it turns amber?

A

It flashes green whenever:
Excessive motion is detected
A disagreement exists between the MCDU position and the last position memorized by the IRU’s
A position has not been entered in the MCDU
It flashes amber when an engine is started to remind the crew that the alignment is not yet complete and the aircraft cannot be moved until it’s done.

24
Q

How many nav databases are loaded onto each FMGC?

A

2

25
Q

What happen to your flight plan and other stored data if the nav database is switched?

A

It is erased

26
Q

What calculates the optimum, managed speeds for each phase of flight?

A

The flight augmentation computers (FAC’s)

27
Q

What is the managed speed for takeoff, and what is it called?

A

The managed speed is called SRS or Speed Reference System. SRS equal V2 + 10kt for both engines running or V2 for single engine.

28
Q

When does the takeoff phase begin and end?

A

It begins when takeoff thrust is set and continues to acceleration altitude

29
Q

When does the climb phase begin and end? What’s the managed speed for this phase?

A

It begins at acceleration altitude and ends upon reaching cruise altitude entered into the MCDU. The managed speed is 250kts below 10,000’MSL and economy climb speed above 10,000’MSL as calculated based on the cost index. Additionally the FMS will observe any speed or altitude constraints entered into the flight plan (such as might exist in a SID).

30
Q

When does the cruise phase begin and end?

A

From top of climb to top of descent. It includes any step climbs or enroute descents.

31
Q

When does the descent phase begin and end?

A

It starts at top of descent or 200nm from the destination, and ends when the approach phase is confirmed by the pilots or the plane reaches the DECEL point.

32
Q

What is green dot speed?

A

The slowest speed the plane should fly in the clean configuration.

33
Q

What is the managed speed called when the flap handle is moved to flaps 1? Flaps 2 or 3? Config full?

A

Flaps 1 = S speed
Flaps 2 or 3 = F speed
Config full = Vapp

34
Q

When does the go-around phase begin?

A

When the thrust levers are advanced to TOGA. Doing so will sequence the missed approach. However managed vertical flight is not available. The appropriate altitude must be selected on the FCU.

35
Q

During a go-around what is the managed speed after acceleration altitude?

A

Green dot

36
Q

Which FMGC is the Master?

A

The on-side FMGC (on-side in this context means the side of the active autopilot)

37
Q

What is lost in backup navigation mode?

A

Autopilot and flight directors

38
Q

What is the mix IRS position?

A

Each one of the 3 IRU’s computes it position. The average of the 3 positions is called the MIX IRS position. If one of the 3 IRU’s fails the MIX position is not computed.

39
Q

What is takeoff update?

A

When the thrust levers are set to FLEX or TOGA during takeoff, the FMGC auto updates the aircrafts position to the end of the runway input into the aircrafts flight plan.

40
Q

What needs to be done on the FMGC for an intersection takeoff?

A

A takeoff shift (distance between intersection and full length) must be entered for accurate climb profile computation. This can be entered on the TAKE OFF page.

41
Q

What does the NAV ACCUR DOWNGRAD message in the scratch pad mean?

A

In means that the Estimated Position Error (EPE) is greater than the Required Navigation Performance (RNP)

42
Q

What 4 things does the FMGS auto tune do?

A

-Tunes localizers for guidance on takeoff
-Tunes for FMS position updating
-Tunes for en route VOR/DME display
-Tunes for approach guidance

The RADIO NAV page displayed the navaids that have been tuned automatically or manually for display on the ND’s

The SELECTED NAVAIDS page lists the navaids that have been tuned for radio position updating

43
Q

What normally powers ADIRU 1?

A

The AC ESS bus (meaning that ADIRU 1 will still be powered in the emergency electrical configuration). The back up power is the HOT BAT 2 bus.

44
Q

What normally power ADIRU 2 and 3?

A

ADIRU 2 is normally powered by AC bus 2. ADIRU 3 is normally powered by AC bus 1. They are both backup powered by HOT BAT 1 bus. These ADIRU’s will only remain on battery power for 5 minutes however.

45
Q

What message appears on the E/WD after starting a complete alignment? What does it mean if the message starts flashing?

A

“IRS IN ALIGN 10 MIN” appears in green. It starts flashing green if alignment of one of the IRU’s is faulty due to one of 3 things

-Excessive emotion is detected
-There’s a disagreement between the entered MCDU position and the last position memorized by the IRU’s
-A position has not been entered into the MCDU

46
Q

When will the “IRS IN ALIGN” message turn amber?

A

If an engine is started during the alignment process

47
Q

When must a complete alignment be performed?

A

-First flight of the day
-There is a crew change
-GPS is not available and poor navaid coverage is expected along the route
-GPS is not available and the expected flight time is longer than 3 hours
-Before all international flights (including Alaska)
-Flight into class 2 airspace

frontier (18 decks)

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