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Allegiant A320 Systems (2024) > Autoflight > Flashcards

Autoflight Flashcards

1
Q

Q1 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

What are the main components of the FMGS?

A
  • 2 FMGCs
  • 2 MCDUs
  • 1 FCU (two independent channels)
  • 2FACs

[FCOM-DSC-22-10-10]

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2
Q

Q2 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

What are the functions of the Flight Management Guidance Computers?

A
  • Flight Guidance
  • Flight Management

[FCOM-DSC-22-10-10]

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3
Q

Q3 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

What are the 3 modes of FMGC operation?

A
  • Independent (MCDU scratchpad displays – INDEPENDENT OPERATION)
  • Single (ND displays – SELECT OFFSIDE RNG/MODE)
  • Dual (Normal)

[FCOM-DSC-22-10-30]

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4
Q

Q4 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

What are the 2 modes of flight guidance?

A

Managed Guidance
Selected Guidance

[FCOM-DSC-22-30-10]

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5
Q

Q5 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

What is the Managed mode of flight guidance used for?

A

Long-term lateral, vertical, and speed profiles as determined by the FMGS

[FCOM-DSC-22-30-10]

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6
Q

Q6 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

What is the Selected mode of flight guidance used for?

A

Temporary lateral, vertical, and speed commands as selected with the FCU

[FCOM-DSC-22-30-10]

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7
Q

Q7 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

Does Selected or Managed Guidance have priority?

A

Selected Guidance always has priority

[FCOM-DSC-22-10-10]

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8
Q

Q8 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

How do you determine the validity of the navigation database?

A

On the Aircraft Status page via the MCDU

[FCOM-DSC-22-20-20-50]

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9
Q

Q9 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

What input does each FMGC use for position determination?

A

A hybrid (“mix”) IRS/GPS position

[FCOM-DSC-22-20-20-10]

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10
Q

Q10 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

How does autopilot selection influence master FMGS logic?

A
  • If one autopilot is engaged, the respective FMGS is master
  • If both autopilots are engaged, FMGS 1 will be the master

[FCOM-DSC-22-10-30]

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11
Q

Q11 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

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

A

An FMGS has failed and both NDs must be set to the same mode and range (single mode)

[FCOM-DSC-22-10-30]

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12
Q

Q12 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

Can both autopilots be engaged during any phase of flight?

A

No, only during an ILS approach

[FCOM-DSC-22-30-30]

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13
Q

Q13 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

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

A

Large – Pilot entries and modifiable data
Small – Default/computed non-modifiable data

[FCOM-DSC-22-10-40-10]

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14
Q

Q14 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

Where do you enter the Zero Fuel Weight?

A

INIT B page (not accessible after engine start)

[FCOM-DSC-22-20-50-10-25]

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15
Q

Q15 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

What do amber box prompts on the MCDU indicate?

A

An entry is mandatory

[FCOM-DSC-22-10-40-10]

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16
Q

Q16 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

What occurs when managed NAV mode is engaged and the aircraft flies into a flight plan discontinuity?

A

NAV mode will be lost and the HDG/TRK mode engage

[FCOM-DSC-22-20-30-10-05]

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17
Q

Q17 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

What is the function of the Flight Control Unit?

A
  • Permits short term interface between the pilot and FMGS
  • Allows temporary modification of any flight parameter (HDG, SPD, ALT, V/S)
  • Used to select operational modes of the autopilots, flight directors, and A/THR system

[ FCOM-DSC-22-10-10 ]

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18
Q

Q18 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

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

A

FMGS Managed Guidance is in use

[FCOM-DSC-22-10-40-20]

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19
Q

Q19 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

How is Selected Guidance engaged?

A

Pull the appropriate selector knob

[FCOM-DSC-22-10-40-20]

20
Q

Q20 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

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

A

Confirm all mode inputs by reference to the Flight Mode Annunciator (FMA)

[FCOM-DSC-22-30-100]

21
Q

Q21 | MCDU / FLIGHT MANAGEMENT GUIDANCE SYSTEM

Will the FCU Altitude window ever display dashes?

A
  • No.
  • Pilot selected altitude will always be displayed

[FCOM-DSC-22-10-40-20]

22
Q

Q22 | PRIMARY FLIGHT DISPLAY

What does each column mean on the PFD?

A

A/THR | VERTICAL | LATERAL | APPROACH CAPABILITY, DH/MDA | AP, FD, A/THR ENGAGEMENT STATUS

[FCOM-DSC-22-30-100]

23
Q

Q23 | PRIMARY FLIGHT DISPLAY

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

A

A white box is temporarily displayed around the new indication (10-15secs)

[FCOM-DSC-22-30-100]

24
Q

Q24 | PRIMARY FLIGHT DISPLAY

How are armed modes displayed on the FMA?

A
  • Blue – armed
  • Magenta – armed because of a constraint
  • Green – engaged

[FCOM-DSC-22-30-100]

25
# Q25 | PRIMARY FLIGHT DISPLAY When is the side stick position indication icon (white cross) displayed?
* Displayed when the first engine is started * Disappears at liftoff ## Footnote [FCOM-DSC-20-30]
26
# Q26 | PRIMARY FLIGHT DISPLAY What would the large red arrowheads indicate?
Pitch attitude of > 30° ## Footnote [FCOM-DSC-31-40]
27
# Q27 | PRIMARY FLIGHT DISPLAY What is the meaning of USE MANUAL PITCH TRIM?
You are in Direct Law ## Footnote [FCOM-DSC-27-20-20]
28
# Q28 | PRIMARY FLIGHT DISPLAY What is the meaning of MAN PITCH TRIM ONLY?
You are in Mechanical Backup ## Footnote [FCOM-DSC-27-20-20]
29
# Q29 | PRIMARY FLIGHT DISPLAY What are the pitch and roll angle limits indicated by the green '=' signs?
* Pitch: +30° up/-15° down * Roll: +/- 67° ## Footnote [FCOM-DSC-31-40, FCOM-DSC-27-20-10-30]
30
# Q30 | PRIMARY FLIGHT DISPLAY How can you determine you are in Alternate Law?
* Amber X’s replace the green = marks at the pitch and bank limits * Only VLS and VSW is displayed on the airspeed scale ## Footnote [FCOM-DSC-27-20-20]
31
# Q31 | PRIMARY FLIGHT DISPLAY When would the sideslip index change from yellow to blue?
In case of an engine failure during takeoff/go-around, it is now a blue beta target ## Footnote [FCOM-DSC-31-40]
32
# Q32 | PRIMARY FLIGHT DISPLAY What does the yellow speed trend line on the airspeed display indicate?
The speed the aircraft will reach in 10 seconds if acceleration/deceleration remains constant ## Footnote [FCOM-DSC-31-40]
33
# Q33 | PRIMARY FLIGHT DISPLAY What is the difference between the magenta and blue target airspeeds?
* Magenta – Managed speed computed by the FMGC * Blue – Selected speed on the FCU ## Footnote [ FCOM-DSC-31-40 ]
34
# Q34 | PRIMARY FLIGHT DISPLAY What speed does VMAX represent and how is it displayed?
* It is the lowest of Vmo/Mmo, VLE, or VFE * Defined by the bottom of a red and black strip along the speed scale ## Footnote [ FCOM-DSC-31-40, FCOM-PRO-SUP-10 ]
35
# Q35 | PRIMARY FLIGHT DISPLAY What is VLS?
* Represents lowest selectable speed providing an appropriate margin to the stall speed * Corresponds to 1.13 VS during takeoff * Corresponds to 1.23 VS after retraction of one step of flaps * Corresponds to 1.28 VS in clean configuration * Above 20,000ft, VLS is corrected for Mach effect to maintain a buffet margin of 0.2 G * Equivalent to VREF in approach mode * Increases with speedbrake extension ## Footnote [ FCOM-DSC-31-40, FCOM-DSC-22-10-50-20, FCOM-PRO-SUP-10 ]
36
# Q36 | PRIMARY FLIGHT DISPLAY What is Green Dot speed?
* Engine out operating speed in clean configuration * Appears when the aircraft is in the clean configuration * Corresponds to the best lift-to-drag ratio ## Footnote [ FCOM-DSC-31-40, FCOM-PRO-SUP-10 ]
37
# Q37 | PRIMARY FLIGHT DISPLAY What is Ground Speed Mini?
* Based on a calculated groundspeed at the runway * Protects against actual groundspeed dropping below this calculated groundspeed ## Footnote [ FCOM-DSC-22_30-60-20 ]
38
# Q38 | PRIMARY FLIGHT DISPLAY What does it mean when you see the magenta triangle on the PFD speed tape above the FMGC computed or entered VAPP during an approach?
Ground Speed Mini has increased speed due to a higher headwind component at your present location than what was calculated at the runway ## Footnote [ FCOM-DSC-22_30-60-20 ]
39
# Q39 | PRIMARY FLIGHT DISPLAY Is the ground speed mini function available in selected speed?
No – Managed speed only ## Footnote [ FCOM-DSC-22-30-90 ]
40
# Q40 | PRIMARY FLIGHT DISPLAY What are 3 ways to disconnect the A/THR?
* Instinctive Disconnect buttons * Thrust Levers to IDLE * A/THR pushbutton ## Footnote [ FCOM-DSC-22-30-90 ]
41
# Q41 | PRIMARY FLIGHT DISPLAY How do you disconnect the A/THR for the remainder of the flight?
Press and hold the Instinctive Disconnect Pushbutton for 15 seconds ## Footnote [ FCOM-DSC-22-30-90 ]
42
# Q42 | PRIMARY FLIGHT DISPLAY What would you lose if you held down the Instinctive Disconnect Pushbutton for more that 15 seconds?
Alpha Floor Protection ## Footnote [ FCOM-DSC-22-30-90 ]
43
# Q43 | PRIMARY FLIGHT DISPLAY What happens to thrust and what annunciates on the FMA when you reach Alpha Floor?
* Thrust – TOGA * FMA – A.FLOOR ## Footnote [ FCOM-DSC-22-30-90 ]
44
# Q44 | PRIMARY FLIGHT DISPLAY What occurs during Alpha Floor protection after the A. FLOOR conditions are no longer applicable?
FMA changes to TOGA LK **NOTE:** On some software standards the mode reverts to the mode that was active prior to the engagement of A. FLOOR ## Footnote [ FCOM-DSC- 22_30-50-50 ]
45
# Q45 | PRIMARY FLIGHT DISPLAY How do you regain normal A/THR when in TOGA LK?
* Move Thrust Levers to the TOGA detent * Press the Instinctive Disconnect button * Return Thrust Levers to CL detent * Push the A/THR pushbutton to engage A/THR ## Footnote [ FCOM-DSC-22-30-90 ]
46
# Q46 | PRIMARY FLIGHT DISPLAY When is Alpha Floor Protection active?
From lift-off through 100 feet RA on approach ## Footnote [ FCOM-DSC-22-30-90 ]
47
# Q47 | PRIMARY FLIGHT DISPLAY When would Thrust Lock occur?
* Thrust levers in CL detent and A/THR pushbutton on the FCU is pushed, or * A/THR disconnects due to a failure ## Footnote [ FCOM-DSC-22-30-90 ]

Allegiant A320 Systems (2024) (18 decks)

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