Air Management System Flashcards Preview

FO ERJ 175 Initial > Air Management System > Flashcards

Flashcards in Air Management System Deck (25)
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1
Q

The buttons on the AIR COND/PNEUMATIC control panel are in the AUTO position if pressed in and dark (no white striped bar).

A

True

2
Q

The maximum altitude that the aircraft can operate single PACK (only one PACK operative) is ___.

A

31,000 ft

3
Q

The APU can supply bleed air for engine and wing anti-ice.

A

False

4
Q

Pressing the DUMP button.

A

Opens the outflow valve (2,000 FPM cabin altitude climb), commands the PACKs off, and commands the recirculation off.

5
Q

If the Pressurization Mode button is in AUTO, the LFE is automatically set based on the flight plan destination.

A

True

6
Q

PACKs are automatically turned off during engine start (if the button is in the AUTO position).

A

True

7
Q

Dry ice can be placed in the ___ cargo bin only.

A

FWD

8
Q

The ___ protects the airplane’s structure from damage due to over or under pressurization.

A

Safety Valves

9
Q

If the PAX Cabin knob is set to ATTND, the flight attendant has control of the cabin temperature.

A

True

10
Q

What are the on-board sources of bleed air?

A
  • Engine 1
  • Engine 2
  • APU
11
Q

The Air Management System (AMS) is a pneumatic system that provides power to which systems?

A
  • Environmental Control System (ECS)
  • Engine and wing anti-ice
  • Water pressurization
  • Engine starter
12
Q

The ___ controls airflow from the cabin to the outside ambient air, controlling pressurization.

A

Outflow Valve (OFV)

13
Q

When do the safety valves open to protect the airplane’s structure from damage?

A
  • 8.6psi

- (-.5psi)

14
Q

What does Ram Air do?

A

Provides emergency ventilation in case of pack shutdown and smoke removal.

15
Q

What is the acronym PACK?

A

Pneumatic Air Conditioning Kit

16
Q

How many PACKs provide cabin heating, air conditioning, and pressurization?

A

2

17
Q

The APU can supply bleed air for the ECS up to ___ feet.

A

15,000

18
Q

The APU can supply bleed air for engine start up to ___ feet.

A

21,000

19
Q

The ECS provides ventilation for live animals or dry ice in the ___ cargo bay only.

A

FWD

20
Q

The maximum pressure differential between the cabin and ambient air is ___.

A
  • 7.8 psi at 37,000 feet and below

- 8.34 psi above 37,000 feet

21
Q

The minimum duct pressure for crossbleed start is ___ psi.

A

40

22
Q

In what situation might the DUP button be used on the pressurization control panel?

A

Smoke evacuation

23
Q

When the “Masks Deploy” knob is set to AUTO, at what cabin altitude will the passenger O2 masks deploy?

A

14,000 feet to 14,750 feet.

24
Q

What will happen if you select “OVRD” on the Passenger Oxygen panel?

A

Passenger oxygen masks will deploy regardless of cabin altitude.

25
Q

What would result if you initially planned to cruise at FL380 but, for a better ride, you stopped your climb at FL360 instead?

A

The cabin would pressurized at a differential pressure of 8.34 psi. adding unnecessary stress on the airframe.