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Republic Airways > Pneumatics > Flashcards

Pneumatics Flashcards

1
Q

What are the parts of the Air Management System (6)?

A
  • Environmental Control System (ECS)
  • Engine start
  • Pressurization
  • Wing and engine anti-ice
  • Water pressure
  • Hot air leak detection
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2
Q

The pressurization system consists of (5):

A
  • Cabin outflow valve
  • Static Pressure Port
  • Negative Pressure Relief Valve
  • Positive Pressure Relief Valve
  • Cabin Pressure Controller
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3
Q

What provides air for the AMS (3)?

A
  • Engline bleeds
  • APU bleed
  • External Pneumatic Source
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4
Q

What is external pneumatic air used for?

A
  • ECS on the ground

- Engine start on the ground

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5
Q

Where is the external ground source panel located?

A

Lower fairing between the wings

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6
Q

What is the primary use for APU bleed air (4)?

A
  • ECS on the ground
  • Engine start on the ground
  • Assist with engine start (less than FL210)
  • Bleed source for pressurization, heating and cooling below 15,000 feet
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7
Q

How many bleed regulating valves are in each engine?

A

2, one high stage and one engine bleed valve)

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8
Q

How would an APU or engine bleed button show a detected leak?

A

An amber light illuminates on the button.

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9
Q

What does the Overheat Detection System (ODS) observe (4)?

A
  • Engine bleeds, packs
  • APU bleed
  • Plumbing for the wing and engine anti-ice system
  • Trim air (rear cabin temperature control on certain delta aircraft)
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10
Q

How many ECS packs are on the aircraft? What provides air for the pack?

A

2 independent packs

Each engine provides bleed air to its respective pack

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11
Q

Can a single pack provide adequate temperature control and pressurization?

A

Yes, up to FL310.

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12
Q

What is the maximum altitude for single pack operation?

A

FL310

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13
Q

Where do the packs distribute air?

A

Pack 1- Flight deck/cabin

Pack 2- cabin

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14
Q

Can a single bleed source power both packs?

A

Yes, through the crossbleed valve.

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15
Q

How many recirculation fans do we have?

A

2

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16
Q

Which cargo bays have ventilation fans?

A

Forward Bay

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17
Q

What cargo compartments may we transport live animals? Why?

A

Forward, it has air recirculation.

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18
Q

What does pushing out the RECIRC button do?

A

Turns off both recirculation fans.

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19
Q

Can the APU bleed be used for anti ice?

A

No

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20
Q

What happens when XBLEED button on the panel is pushed out?

A

It manually closes the crossbleed valve.

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21
Q

What is the DUMP switch used for (3)?

A
  • Emergency evacuation
  • Fast cabin depessurization
  • Smoke evacuation
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22
Q

What happens when the DUMP button is pressed?

A
  • Sets ECS packs and recirculation fans to OFF.
  • Outflow valve opens to climb cabin to 12,400 at a rate of 2,000 feet per minute.
  • When cabin reaches 12,400, outflow valve is commanded closed.
23
Q

With respect to the DUMP button, which functions are available in manual mode?

A

-Packs and recirc fans will turn off.

24
Q

How can the outflow valve be modulated?

A

Manually or automatically.

25
Q

Why does the DUMP button have a red-raised border around it?

A

So you can find it in low visibility conditions within the cockpit.

26
Q

The MAN mode position allows manual control of:

A

Outflow valve

27
Q

How can you determine the position of the outflow valve?

A

There is a pointer on the outflow valve position indicator on the environmental control system synoptic page on the MFD.

28
Q

In Manual mode, will the cabin depressurize on landing?

A

No.

29
Q

What are the DOWN/UP positions used for on the CABIN ALT selector knob?

A

Manually closes/opens the outflow valve to decrease/increase cabin altitude.

30
Q

What is the LFE CTRL selector position on the pressurization MODE selector knob used for?

A

If not available from the FMS database, allows manual input of landing field elevation.

31
Q

Is the pressurization system still in the AUTO mode when LFE is entered manually?

A

Yes

32
Q

Where does the CPC get LFE?

A

FMS or manually selected.

33
Q

How would you manually control the LFE?

A

Momentarily move the LFE selection knob UP or DOWN to change LFE in 100 foot increments

34
Q

How is a manual input for LFE displayed on EICAS?

A

A cyan “M” in front of the altitude readout.

35
Q

What does the ATTND position do on the PAX cabin knob?

A

Switches the cabin temperature control to the flight attendant control panels.

36
Q

What is the memory item for Cabin Altitude HI?

A

OXYGEN MASKS……VERIFY…….. ON 100%

CREW COMM———————ESTABLISH

37
Q

Where do the packs distribute air?

A

Pack 1: Flight deck/cabin

Pack 2: Cabin

38
Q

Where is air used to cool the forward electronics bay taken from?

A

The flight deck

39
Q

How many fans are in the aft electronics bay?

A

0

40
Q

The gasper system provides air to:

A

Each pilot and passenger position

41
Q

How does the flight attendant know if the temperature setting knob allows them to adjust the temperature?

A

An ENABLED LED on the flight attendant control panel turns on when the pilot selects the ATTND position in the cockpit

42
Q

What keeps the three avionic E-Bays cool?

A

FWD and center: 3 fans each pull air from cabin to bay

AFT: Natural air flow from the cabin

43
Q

Engine and APU bleed air are the only sources for the pneumatic system on the ground (T/F).

A

False

44
Q

The engine bleeds, air conditioning ducts, APU bleed air distribution, and anti-ice supply have two overheat and leak detection loops. With both loops operational, both loops must detect a leak before an EICAS message is displayed (T/F).

A

True

45
Q

Where is bleed air tapped from the engine?

A

6th and 10th stage compressors

46
Q

Air from the pneumatic system provides:

A

ECS
Wing and engine anti-ice
Engine start
Water pressurization

47
Q

Cruise altitude automatically updates in the MCDU on PERF INIT page 3 if cruise altitude is changed in flight (T/F).

A

False

48
Q

Where does the Cabin Pressure Control System (CPCS) get Landing Field Elevation?

A

FMS or manual control on the pressurization panel

49
Q

Will the DUMP button work when the pressurization switch is in manual mode?

A

No. However, the recirculation fans and packs will turn off

50
Q

The MAN mode on the PRESSURIZATION MODE SELECTOR allows manual control of what?

A

Outflow valve

51
Q

What color is LFE on the EICAS?

A

FMS- green

Manual- Cyan with a ‘M’ in front of the LFE

52
Q

Where does the CPCS get cruise flight level and landing elevation?

A

FMS before takeoff OR
CPCS calculates it using ambient pressure OR
LFE may be manually input

53
Q

At what cabin altitude does the CABIN ALTITUDE HI EICAS show?

A

9700

Republic Airways (18 decks)

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