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Ground School Systems 2 > PC-21 Heads Up Display (HUD) > Flashcards

PC-21 Heads Up Display (HUD) Flashcards

1
Q

Where is the brightness control for the HUD?

A

Mounted on the UFCP.

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2
Q

Where is the HUD Symbol Generator (HSG) located?

A

In the avionics bay

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3
Q

What supplies signals to the HUD?

A

Hud Signal Generator (HSG)

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4
Q

What is the HUD signal generator connected to?

A

The MC

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5
Q

What does the Hud signal generator do?

A
  • Processes data from the aircraft systems in accordance with the instructions from the MC and then generators the HUD symbology.
  • Sends copy of signal and video to PMM.
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6
Q

What is displayed on the HUDR?

A
  • Displays an image of the outside world generated from the video camera in the front cockpit
  • Overlays HUD symbiology ontop of that video camera.
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7
Q

How are the HUD, HUDR and HUDR powered?

A
  • HSG and HUDR are powered by 28V DC from the GEN 1 BUS.

- The HUD is powered by a direct supply from the HSG only.

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8
Q

How can the HUD be selected through different modes?

A
  • Through UFCP switches

- Through HOTAS switches

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9
Q

What are the different HUD modes?

A
  1. NAV - en-route NAV or approach Nav
  2. Air to ground mode
  3. Air to air mode
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10
Q

What does the Flight Path Marker (FPM) show?

A
  • The true flight path of the aircraft

- Also known as the velocity vector.

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11
Q

What does the horizontal distance between the FPM and the CDM show?

A

Drift angle.

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12
Q

When is climb dive marker displayed by default?

A

When groundspeed > 60 kts

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13
Q

What does the CDM indicate?

A

The true representation of the flight path in pitch.

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14
Q

What would you read off of to indicate the aircraft climb or dive angle?

A

The CDM against the Climb Dive Ladder (CDL)

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15
Q

What is the PRS and how can it be selected on/off?

A
  • Pitch Reference Symbol
  • Only available in NAV mode
  • Can be selected on/off through UFCP
  • Replaces CDM marker.
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16
Q

What is the Climb Dive Ladder (CDL)?

A

Provides a reference of the climb or dive angle when read in conjunction with the CDM.

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17
Q

When is the Climb Dive Ladder a pitch ladder?

A

When CDM is caged and the PRS is displayed.

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18
Q

What shows the aircraft’s current heading on the HUD?

A

By a lubber line

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19
Q

What does an inverted triangle pointer indicated?

A

The selected heading

20
Q

What does the inverted T pointer indicate?

A

The current ground track.

21
Q

How can the HUD be referenced to TRUE or MAGNETIC

A

Through PFD switch.

22
Q

Is the airspeed shown below 40 KIAS on the HUD?

A

No

23
Q

When is Mach number displayed on the HUD? When is it removed?

A
  • When mach number increases through 0.40 it displays

- Removed when mach number reduces through 0.35

24
Q

How can TAS, GS or KIAS be changed on HUD?

A

Through PFD Bezel

25
Q

What barometric setting is the displayed HUD altitude based off of?

A

The front PFD barometric setting.

26
Q

What are the limits of the angle of attack scale ON hud?

A

-5 TO 30

27
Q

What is AOA scale displayed on the HUD?

A

When landing gear is selected down.

28
Q

What is the scale of the vertical speed reference bar?

A

250 ft/min for smaller lines

1000 ft/min for larger lines

29
Q

What controls the appearance of the VSI on the HUD?

A

UFCP

  • OFF - VSI is never displayed
  • ON - VSI is always displayed
  • AUTO - the VSI is only displayed when the landing gear is selected down and disappears hen the landing gear is selected up.
30
Q

What on the HUD gives an indication of aircraft acceleration or decelleration?

A

Power chevrons relative to climb dive marker.

31
Q

What is radar altitude resolution > or < 200 ft?

A

< 200 ft to 1 ft

> 200 ft to 10 ft

32
Q

When is HT value displayed on the HUD?

A
  • When it has been set initially

- When the RA is below the HT

33
Q

What displays when the AP is engaged?

A

Asterisk

34
Q

Is a caution displayed on HUD if A/C is over g’ed?

A

No

35
Q

What is available on the HUD when MC is selected as the primary NAV source?

A

Steer point diamond.

36
Q

What does an E or an L next to the time in the bottom right hand corner of the HUD indicate?

A

Either Early or Late Time on target.

37
Q

What does the speed carrot mean?

A

The speed that should be flown to get to time on target.

38
Q

What indications are shown on the HUD when ILS 1/ILS 2 are shown on the HUD?

A
  1. Localizer indications
  2. Glideslope indications
  3. Flight Direction (FD) box
  4. Excessive deviation arrows.
39
Q

What are the two declutter levels available in the NAV mode?

A
  1. Through UFCP

2. By pressing the PCL weapon mode switch to toggle through DCL OFF, DCL 1 or DCL 2 levels.

40
Q

How are the HUD formats modified or selected through?

A

Through UFCP

41
Q

Does the HUD show EICAS or DWP indications?

A

No

42
Q

What does an amber CHECK NAV annunciation mean on the MFD?

A

Inertial Reference System failure

43
Q

What will occur if there is an air data computer failure?

A
  1. Airspeed
  2. Altitude
  3. Mach
44
Q

What occurs if there is an engine flameout?

A

Electrical power is removed from the HUD and no symbology is displayed anymore

45
Q

Should the HUD be used if a data failure is apparent?

A

No

Ground School Systems 2 (19 decks)

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