Autoflight V-Prep Flashcards

1
Q

How does the FMGS compute the aircrafts position?

A

Through the Air Data and Inertial Reference system (ADIRS) (both horizontally and vertically) and
Radio navaids

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2
Q

How does the FMGS know where the aircraft wants to go and how its going to get there?

A

By utilizing the Flight Management and Guidance Computer (FMGC)

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3
Q

How is the FMGC programmed?

A

Though the Multipurpose Control and Display Unit (MCDU)

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4
Q

What does the FMGC command to guide the aircraft?

A

The Autopilot and Flight Director

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5
Q

Under normal conditions, Which FMGC is controlling AP1 and FD1?

A

FMGC 1

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6
Q

Under normal conditions, Which FMGC is controlling AP2 and FD2?

A

FMGC2

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7
Q

Which system controls the speed and thrust required by the FMGC (or selected on the FCU by the pilots)?

A

The Auto Thrust System (A/THR)

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8
Q

In all cases the automatic flight controls can be disengaged and the aircraft can be manually flown using the sidestick and manual thrust. True/False?

A

True

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9
Q

When is A/THR automatically engaged on take-off?

A

When the thrust levers are set to the FLX/MCT gate or TOGA

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10
Q

What position are the thrust levers set for climb, cruise and descent?

A

CLB gate

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11
Q

Is auto thrust active when flying on one engine with the thrust lever in the MCT gate?

A

Yes

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12
Q

When auto thrust is active do the thrust levers move with thrust changes?

A

No

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13
Q

What does setting idle thrust above 50ft RA do to auto thrust?

A

Disconnects it

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14
Q

What can happen if thrust levers are not in the correct position?

A

Speed or thrust requirements may not be met

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15
Q

What does selecting reverse thrust do to the auto thrust?

A

Disconnects it

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16
Q

What is the procedure for disconnecting auto thrust manually?

A
  1. Move thrust levers out of CLB gate
  2. Align thrust with blue doughnut (TLA)
  3. Press instinctive disconnect
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17
Q

Which window is always displayed (not dashed lines) on the FCU?

A

The altitude window

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18
Q

After what time will the FCU selection remain in Managed if the pilot does not pull the:

a) HDG knob?
b) SPD knob?

A

a) 45sec

b) 10sec

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19
Q

What must be chencged prior to selecting V/S?

A

Altitude

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20
Q

When, after take-off, can the autopilot be engaged?

A

5 sec or 100ft

21
Q

When, prior to landing, must the autopilot be disengaged?

A

DH, or

Rollout on an autoland

22
Q

Only when can both autopilots be engaged?

A

When on an ILS approach

23
Q

How is the AP normally disengaged?

A

Red pb switch on sidestick

24
Q

If the pilot does not wish to follow the FD commands, why should both FD’s be switched off?

A

To allow the A/THR to command the aircraft in speed mode and not take orders from the FMGC

25
Q

What controls the information on the ND?

A
  • EFIS control panel
  • TERRAIN pb
  • Weather radar
  • Transponder
26
Q

How many ADIRU’s are there?

27
Q

ADIRU’s supply information to….?

A
  • FMGC’s
  • PFD’s
  • ND’s
  • Flight Control Computers
  • Pressurisation system
28
Q

a) ADIRU 1 normally supplies information to….?
b) ADIRU 2 normally supplies information to…..?
c) ADIRU 3 ?

A

a) Captains instruments
b) FO’s instruments
c) Standby system. Backup for Captains or FO’s instruments in the event of a failure

29
Q

The ADIRU’s have two separate components. What are they?

A

The Air Data Reference Unit (ADR)

The Inertial Referece System (IRS)

30
Q

Can the ADR and the IRS work independently of the other in case of a failure?

A

Yes

(eg. ADR1 Fault, IR 1 still operational

31
Q

What information do the ADR’s supply to the displays?

A

Altitude
Airspeed
Angle of attack
Temperature

32
Q

Each ADR system has its own set of heated probes on the forward section of the fuselage. How many:

a) static?
b) pitot?
c) angle of attack?
d) TAT?

A

a) 6 static
b) 3 pitot
c) 3 angle of attack
d) Only 2 TAT. Captains TAT supplies ADR 1 and 3

33
Q

Angle of attack probes feed information directly into the ADR’s. T/F?

34
Q

Where does the analogue information from Static, pitot and TAT probes go to be converted to digital information?

A

To the 8 Air Data Modules (ADM’s),

and then to the ADR’s for processing.

35
Q

What information do the IRS supply?

A
Acceleration
Attitude
Vertical acceleration
Direction (FPV, Track, Hdg and rotational rates around all 3 axis)
Ground speed
Position
36
Q

What type of gyroscope does each IRS have?

A

A laser ring gyroscope which has no moving parts.

37
Q

Do the IRS receive information from GPS receivers?

38
Q

On the ADIRU panel are the Tracks/Wind/HDG with reference to magnetic north or true north?

A

True North

39
Q

a) When will the ON BATT light illuminate on the ADIRU panel?
b) What also accompanies the ON BATT light when on the ground?

A

a) Briefly at the beginning of alignment, and
When any IRS is supplied from the aircraft battery only

b) An external horn and the ADIRU & AVNCS light illuminate on the external power panel.

40
Q

What does IR FAULT light on the overhead panel indicate?

A

The IRS is lost

41
Q

What does a flashing IR FAULT light indicate?

A

Attitude and heading information may be recovered in the ATT mode

42
Q

When will the IRS ALIGN light illumitate?

A

While the IRS is in alignment

43
Q

When will the IRS ALIGN light go out?

A

When alignment is complete

44
Q

When will the ALIGN light on the overhead panel flash?

A

If no airfield position is inserted in the MCDU after 10mins, or
If there is a fault detected in the IRS, or if the airfield position entered and the shutdown position remembered by the IRS is greater than 1deg of latitude or longuitude.

45
Q

How long does full alignment take?

A

10 minutes

46
Q

What does the ATT position do?

A

supplies attitude and heading information if the system loses its ability to navigate

47
Q

When will the ADR FAULT light illluminate?

A

If a fault is detected in any part of the ADR

48
Q

How often does heading information need to be entered into the ADIRU (or MCDU if this function is available) when operating in the ATT mode

A

Every 10 mins

49
Q

How can the pilot access ADIRU 3 information should ADR or IRS fail?

A

By using the Switching Panel