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Republic Airlines > E-170/175 Air Management System > Flashcards

E-170/175 Air Management System Flashcards

1
Q

What is part of the Air Management System?

WHEEEP

A
  • Water pressure
  • Hot air leak detection
  • ECS
  • Engine Start
  • Engine and wing Anti-ice
  • Pressurization
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2
Q

Pressurization system consist of?

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?

A
  • Engine bleeds
  • APU bleeds
  • 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?

A
  • ECS on the ground
  • Engine start on the ground
  • Assist with engine start (< FL210)
  • Bleed source for pressurization, heating and cooling (< 15,000 ft MSL)
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7
Q

How many bleed regulating valves are in each engine?

A

• 2

1 high stage bleed and 1 engine bleed

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8
Q

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

A

• An amber light illuminates

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9
Q

What does the overheat detection system (ODS) observe? PEAT

A
  • Engine bleeds, packs (AC ducts)
  • APU bleed
  • Plumbing for the wing and engine anti icing system
  • Trim air
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10
Q

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

A
  • 2 independent packs (left and right)

* 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 max altitude for a single pack operation?

A

• FL310

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13
Q

Where do the packs distribute air to?

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 a crossbleed valve

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15
Q

How many recirculation fans recirculate air back into the cabin/flightdeck?

A

• 2

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16
Q

Which cargo bays have ventilation fans?

A

• Forward

17
Q

What cargo compartment may we transport live animals?

A

• Forward because it has air recirculation

18
Q

Pushing out the RECIRC buttons turns off?

A

• Both recirculation fans

19
Q

Can the APU bleed be used for the anti ice system?

A

• No

20
Q

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

A

• It manually closes the crossbleed valve

21
Q

The DUMP switch is used for?

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

What happens when the DUMP button is pressed?

A
  • Sets the ECS packs and recirculation fans to OFF.
  • Controls the outflow valve to maintain the cabin altitude rate of climb at 2000 ft/min up to 12,400 ft.
  • When the cabin altitude reaches 12,400 ft it commands the outflow valve full closed.
23
Q

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

A

• When pressed, packs and recirc fans will shut down.

24
Q

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

A

• So you can find it in low visibility conditions in the flight deck.

25
Q

The Outflow valve can be modulated ________ or ________?

A

• automatically or manually

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 (ECS) synoptic page on the MFD.

28
Q

In the 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 data base, allows manual input of the 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 Landing Field Elevation (LFE)?

A

• FMS and if not available from the FMS data base, LFE must be manually selected on the
pressurization panel.

33
Q

How would you manually control the LFE?

A

• Momentarily move the LFE selection knob UP or DOWN.

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 over the cabin temperature control to the Flight Attendant control panel(s).

36
Q

What is the memory item for Cabin Altitude Hi?

A
  • OXYGEN MASKS…Verify…ON, 100%

* CREW COMM …ESTABLISH

Republic Airlines (5 decks)

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