Air Management System

Question 1

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

Answer 1

True

Question 2

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

Answer 2

31,000 ft

Question 3

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

Answer 3

False

Question 4

Pressing the DUMP button.

Answer 4

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

Question 5

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

Answer 5

True

Question 6

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

Answer 6

True

Question 7

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

Answer 7

FWD

Question 8

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

Answer 8

Safety Valves

Question 9

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

Answer 9

True

Question 10

What are the on-board sources of bleed air?

Answer 10

• Engine 1
• Engine 2
• APU

Question 11

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

Answer 11

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

Question 12

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

Answer 12

Outflow Valve (OFV)

Question 13

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

Answer 13

• 8.6psi

- (-.5psi)

Question 14

What does Ram Air do?

Answer 14

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

Question 15

What is the acronym PACK?

Answer 15

Pneumatic Air Conditioning Kit

Question 16

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

Answer 16

2

Question 17

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

Answer 17

15,000

Question 18

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

Answer 18

21,000

Question 19

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

Answer 19

FWD

Question 20

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

Answer 20

• 7.8 psi at 37,000 feet and below

- 8.34 psi above 37,000 feet

Question 21

The minimum duct pressure for crossbleed start is ___ psi.

Answer 21

40

Question 22

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

Answer 22

Smoke evacuation

Question 23

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

Answer 23

14,000 feet to 14,750 feet.

Question 24

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

Answer 24

Passenger oxygen masks will deploy regardless of cabin altitude.

Question 25

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

Answer 25

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