Pneumatics

Question 1

What controls the selection of high or low pressure ports in engine bleed system when in auto & norm modes?

Answer 1

The Electronic Control Unit

Question 2

FCSOV meaning?

Answer 2

Flow Control Shut off Valve

Question 3

What monitors the amount of bleed air extracted from each engine?

Answer 3

Electronic Control Unit ensures 50% bleed from each engine is extracted under normal conditions

Question 4

What position of the BLEED Control Selector with bleeds on will display the white text BLEED on the ED

Answer 4

MIN - Must be selected for Take off

Question 5

When will the BLEED annunciator be displayed in amber?

Answer 5

Normal take off power is set with the BLEED control selector in either NORM or MAX

Question 6

With a loss in electrical power, what position do the nacelle FCSOV valves fail to?

Answer 6

Closed preventing pressurisation and air conditioning

Question 7

What systems will continue to recieve bleed air if the BLEED switches are se to the OFF position?

Answer 7

De-icing system

Oil Cooler Ejectors

Question 8

How do you select bleed air from the APU?

Answer 8

Both Bleed switches to OFF and select BL AIR of the APU Control Panel

Question 9

The ECU will automatically close the FCSOV in the event of an over temp or press?

Answer 9

True, and triggers the respective BLEED HOT light

Question 10

Failure of ECU digital channel will auto switch to analogue?

Answer 10

True - Only low pressure bleed air is available as high-pressure Shut-off Valve defaults to closed position.