Air Conditioning/Pressurization/Ventilation/Pneumatic

Question 1

Air-002
Recall the Function of each position of the x bleed selector.

Answer 1

-Shut
*commands crossbleed valve closed, overriding auto logic.
-Auto:
*auto logic controls open and closing of the crossbleed valve
*crossbleed valve commanded open when the APU bleed Valve is open
*crossbleed valve commanded closed when APU bleed valve is closed.
*crossbleed valve commanded closed when a bleed leak is detected.
-OPEN_
*commands the crossbleed valve open, overriding the auto logic.

Question 2

AIR-004
Recall the indication of external high-pressure air being applied to the pneumatic system.

Answer 2

With NOinternal air source being provided(I.E. APU or engine bleed air) , A PSI Value is displayed on the left side of the ECAm Bleed page. By default, the air source must be external high pressure air cart.

Question 3

Air_005
Recall the indications of the Engine bleed valve and HP(High Pressure ) valves on the ECAM Bleed Page.

Answer 3

*ENGINE BLEED VALVES are depicted next to the respetvie engine’s number(1 and 2) on the lower portion on the page.
*HP valves are depicted on the lower portion of the page next to the white HP designator.

NOTE: IP(intermediate pressure) check valves are not specifically depicted but are represented by white IP designator.

Question 4

AIR_008
Recall the Indication when the APU bleed air is in use

Answer 4

*APU bleed valve indicates open on the ECAM bleed page.
*APU Bleed is displayed in green on the memo section of the E/WD.

Question 5

Air_009 Recall the areas of the aircraft where a bleed air leak can be detected.

Answer 5

• WINGS:each wing’s bleed air duct
  *Engine Pylons: area from the engine to the respective wing bleed duct
  *Aft Fuselage: area surrounding the APU Bleed air duct

Question 6

Air_011 Recall the indications and effects of Zone Controller channel Failures.

Answer 6

*Primary Channel Failure
_Alt Mode appears at the top of the ECAM Cond Page
-Secondary channel operates as backup.
-flow setting function and optimized temp function are not available.
-HOT AIR and Trim Air valves close.

*secondary Channel Failure:
-Has no effect on zone temperature regulation
-backup mode is lost.temperature indications are lost.
*Primary and Second channel Failure:
-PACK REG appears at the top of the ECAM cond page.
-removes all information from ecam cond page.
-Optimized and backup temperature regulations loss
-packs deliver a fixed temperature.

Question 7

Air-013 Recall the effect of Air Condition pack controller channel failures

Answer 7

*Primary Channel Failure:
-Secondary channel Operates as backup.
~pack flow is fixed at previous stetting.

*Secondary Channel Failure:
-Has no effect on packflow regulation.
~backup mode is lost
~ECAM indications related to corresponding pack are lost

*Primary and Secondary Channel Failure:
-Pack outlet temperature is controlled by the anti-ice valve.
~outlet temperature is stabilized
~ECAM indications related to the packs are lost.