Ventilation

Question 1

Ventilation systems provide ventilation for?

Answer 1

Lavatories
Galleys
Aircraft Batteries
Avionics
Fed or aft cargo compartment

Question 2

What is the AEVC?

Answer 2

Avionics equipment ventilation computer/controller.
It provides commands to fans and valves for avionics cooling.
As long as power is on aircraft these fans operate continuously

It cools
-flight deck panels
- avionics bays
- CB panels

Question 3

Ventilation system is monitored on

Answer 3

CAB PRESS page

Question 4

Cargo heating and ventilation are controlled by?

Status is on what page?

Answer 4

Cargo heating controller
Cargo ventilation controller

Controlled by overhead cargo heat panel

COND or
CRUISE page

Question 5

Lava and Galleys are ventilated using

Answer 5

Cabin air by an extraction fan that vents it over board through the outflow valve.

This fan runs continuously with electrical power on Aircraft

Question 6

Ventilation for batteries is done by a?

Answer 6

Venturi using ambient air

Question 7

Inlet valve and Extract valves of the AEVC are located

These valves are monitored?

Answer 7

Inlet-On the left forward fuselage.

Extract-right forward fuselage

On the CABIN PRESS page

Question 8

Skin Heat exchanger is a primary component of the avionics ventilation system. How does it work?

Answer 8

Air is cooled by being moved through aircraft skin between 2 ribs. It is controlled by a SKIN EXCHANGE ISOL VALVE

Question 9

When SKIN EXCHANGE ISOL VALVE is open it also provides heating to?

Answer 9

Forward cargo compartment. Eventually expelling through outflow valve

Question 10

On ground AEVC is in the Open configuration.

In flight or on ground if it is cold AEVC is in closed configuration.

Answer 10

Open configuration (inlet/extract valves open) (skin exch ISOL valve closed) is never used in flight.

Closed configuration (inlet/extract closed skin exch isol valve open)(valve to forward cargo compartment open)

Intermediate configuration after takeoff thrust (inlet closed/extract partially open/ skin exch valve open/cargo open) very similar to closed.

This is found on CABIN PRESS page

Question 11

If AEVC senses smoke

Answer 11

Avionics smoke caution is generated.
Airconditioner supplies air to system this doesn’t happen automatically. Must do the checklist.

Question 12

FWD Cargo compartment is ventilated with?

Answer 12

Cabin air / inlet valve / extract fan / outlay valve / Venturi

If smoke detected valves close

Hot air helps to keep FWD cargo compartment warm

Info is displayed on the COND page