SH Chapter 4 - Automatic Flight Flashcards

1
Q

1) What is the function of the Flight Control Unit?

A

Short term interface between crew and FMGC

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2
Q

2) What do dashes in the FCU display windows along with the adjacent white dot indicate?

A

In managed guidance

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3
Q

3) How is Selected Guidance engaged?

A

Pulling the knob out and dialing the selected parameter

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4
Q

4) Does Selected or Managed Guidance have priority?

A

Selected

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5
Q

5) Will the FCU Altitude window ever display dashes?

A

No

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6
Q

6) What are the main components of the FMGS?

A
  • 2 FMGU
  • 2 MCDU
  • 1 FCU
  • 2 Flight Augmentation Computers (FACs)
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7
Q

7) What are the functions of the Flight Management Guidance Computers?

A
Flight Management
- Navigation and management of Nav radios
- Management of Flight Planning
- Prediction & optimization of performance
- Display management 
Flight Guidance
- AP Command
- FD Command
- A/THR Command
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8
Q

8) What are the 4 modes of FMGS operation?

A
  • Dual mode (normal mode)
  • Independent mode (each FMGC controlled by its MCDU)
  • Single mode (one FMGC only)
  • Backup navigation mode
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9
Q

9) How does autopilot selection influence master FMGS logic?

A
  • One AP engaged, the related FMGC is master
  • Two APs engaged, FMGC 1 is master
  • No AP engaged, FD1 on, FMGC 1 is master. FD2 on and FD1 off, FMGC 2 is master
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10
Q

10) If an amber SELECT OFFSIDE RNG/MODE message is displayed on the ND, what action should the crew take?

A

Change the scale or mode on EFIS to match the other side ND

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11
Q

11) What is the difference between the large and small fonts utilized in the MCDU?

A

Large are crew entry and modifiable data. Small is defaulted/computed and non modifiable data

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12
Q

12) What do amber box prompts on the MCDU indicate?

A

Mandatory data

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13
Q

13) What is VLS?

A

Lowest selectable speed

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14
Q

14) What are the 2 modes of flight guidance?

A

Managed and selected

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15
Q

15) What is the Managed mode of flight guidance used for?

A

Commanding long term lateral, vertical and speed profiles via MCDU

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16
Q

16) What is the Selected mode of flight guidance used for?

A

Commanding short term lateral, vertical and speed profiles via MCDU

17
Q

17) Can both autopilots be engaged during any phase of flight?

A

Only when the localizer/glide slope, rollout or go around mode is armed or engaged

18
Q

18) What is Ground Speed Mini?

A

Speed target that accounts for gusts or wind changes (magenta speed bug)

19
Q

19) What does it mean when you see the magenta target airspeed triangle above VAPP on approach?

A

Ground speed mini has computed headwind is higher than entered in MCDU

20
Q

20) Is the Ground Speed Mini function available in selected speed?

A

No

21
Q

21) What are 3 ways to disconnect the A/THR?

A
  • Thrust levers to idle
  • Instinctive button
  • A/THR pb on FCU
22
Q

22) How do you disconnect the A/THR for the remainder of the flight?

A

Pushing and holding instinctive button for at least 15 seconds

23
Q

23) What would you lose if you held down the Instinctive Disconnect Pushbutton for more than 15 seconds?

A

A/THR for remainder of flight

24
Q

24) What happens to thrust and what annunciates on the FMA when you reach Alpha Floor?

A

Thrust gots to TOGA and A FLOOR displayed in green surrounded by flashing amber box

25
Q

25) What occurs during Alpha Floor protection after speed increases above VLS?

A

TOGA LK

26
Q

26) How do you regain normal A/THR when in TOGA LK?

A

Disengage A/THR and reengage with A/THR pb

27
Q

27) When is Alpha Floor Protection active?

A

In normal law, from lift off to 100’ AGL on landing

28
Q

28) When would Thrust Lock occur?

A

When levers in CL (MCT with OEI) and the

A/THR pb is pushed, or A/THR disconnects due to failure

29
Q

29) How do you confirm all autopilot, FD, and A/THR inputs?

A

FMA

30
Q

30) What does each column mean on the FMA portion?

A

From left to right, A/THR operation, AP/FD vertical modes, AP/FD lateral modes, approach capabilities, AP/FD & A/THR engagement status

31
Q

31) How is the crew made aware of mode changes on the FMA?

A

White box displayed for 10 seconds around any mode change

32
Q

32) How are armed/engaged modes displayed on the FMA?

A

Engaged is in green and armed in blue or magenta

33
Q

33) Under Normal Law, what do the FACs provide?

A

Four main functions:
Yaw- Damping, turn coordination, rudder trim & rudder travel limitation
Flight Envelope - PFD speed scale management & alpha floor protection
Low-energy Aural Alert - “Speed, speed, speed”
Windshear detection - Aural and visual

34
Q

34) How do you determine the validity of the navigation database?

A

Status page of MCDC under Data

35
Q

35) What input does each FMGC use for position determination?

A

Each FMGC from a mix IRS position & GPS position or computed radio position

36
Q

36) When would a Takeoff Shift be entered on the PERF TO page?

A

When taking off from an intersection. Entered in PERF Take Off-page. (look this one up, not required if GPS is primary I believe)

37
Q

37) Where do you enter the Zero Fuel Weight?

A

Init B

38
Q

38) What occurs when managed NAV mode is engaged and the aircraft overflies a flight plan discontinuity?

A

NAV mode automatically reverts to HDG (TRK) mode