Cargo Air and Smoke Detectors

Question 1

Where does air for Cargo compartment come from?

Answer 1

Cabin Air

Question 2

Cargo air panel layout

Answer 2

-Top row ventilation
-middle cooling
-bottom heating

Question 3

What does selecting a compartments isolation Pb to off do?

Answer 3

-inlet and outlet isolation valve closes
-extract fan stops

Question 4

Isolation valve Pb’s in ON position, automatically close when?

Answer 4

-cargo smoke detected
-ditching Pb is selected ON

Question 5

Forward cargo compartment heated/cooled by?

Answer 5

Heated from the left, cooled by the right
-cooled by pack 2
-heated by hot air 1

Question 6

What does the temp selector knob control?

Answer 6

Trim air valves, provides the appropriate amount of hot air to regulate temp.

Question 7

What is the bulk cargo heated by? What is kept in the bulk compartment?

Answer 7

An electric heater..
Pets

Question 8

FWD Cargo cooling selector on Norm position when?

Answer 8

When plants, livestock, or dry ice are carried in the fwd Cargo compartment.

Question 9

What type of smoke detectors in cargo compartments?

Answer 9

Optical.
Particulate matter from smoke and halon remains so won’t detect if fire is out.

Question 10

Cargo fire:
How many halon bottles?
How long do they discharge for?

Answer 10

First bottle 60 seconds
2nd bottle 260 minutes for ETOPS (195 min required)