Air Management System

Question 1

Environmental Control System (ECS)

Answer 1

• Regulates and distributes the air

Question 2

Air used for

Answer 2

• ECS
• Engine start
• Pressurization
• Anti-ice
• Water pressure

Question 3

Bleed air comes from?

Answer 3

• 6th stage (low) and 10th stage (high)

Question 4

Air cooled by?

Answer 4

• Pre-cooler cools incoming air

Question 5

APU air used for?

Answer 5

• ECS (environmental control system)
• Water pressure
• Pressurization
• Engine start

Question 6

How man packs?

Answer 6

• 2 packs located in each wing to fuselage fairing

Question 7

Single pack?

Answer 7

Can provide air for the entire ECS to max alt FL310

Question 8

Recirc fans?

Answer 8

• Reduce the load on the packs
• Provide 52% fish air to 48% recirculated air
• Fans do not work
  
  • Dump button is pressed
  • Smoke is detected in the recirc bay
  • The respective pack OFF

Question 9

Electrical bays cooled by?

Answer 9

Forward, central and AFT electrical bays cooled with conditioned air from the cabin and expelled overboard.

Question 10

Cargo bays vented?

Answer 10

• Forward cargo bay receives air from the cabin and then vented overboard
• AFT not vented

Question 11

Emergency Ram Air?

Answer 11

• Allows ventilation in case of failure of the packs

- Enters left side of the system through a valve need to be below FL250