A320 TECHNICAL
QUESTIONS AND ANSWERS
,1. Conditioned air is distributed to: Cockpit, fwd and aft cabins
2. Hot air fault light illuminates on the air conditioning The hot air press. reg.
panel, valve closes and the trim
air valves close.
3. Does the trim air provide the warm air or the cold air Warm air
to the air conditioning system?
4. In case of zone controller primary and secondary 20 deg C for pack one and
channel failure, what temperatures are maintained by 10 deg C for pack two
pack one and pack two?
5. In normal flight in closed circuit configuration, the Passing air through a skin
avionics ventilation system controls the temperature heat exchanger
of the cooling air by:
6. To enable Ram air to the mixture unit, The Ram air Only when ditterential
switch should be used: pressure is less than 1 psi.
7. Pack controller, primary channel failure. The secondary comput-
er operates as a backup
mode and regulation is
not optimized
8. Pack controller, secondary channel failure No ettect on pack regula-
tion backup mode is lost
9. Pack controller, primary and secondary channel fail- Pack outlet temperature
ure is controlled to between
5 and 30 deg C by the
anti-ice valve
10. Hot air pressure reg. valve failed open: No ettect
,11. Bleed air supplied from the APU (APU bleed valve High
open), the pack flow is automatically selected:
12. Trim air valve, each one optimizes the temperature by: Adding hot air
13. Hot air pressure regulating valve: Regulates the pressure of
hot air tapped upstream
of the packs
14. Pack flow control valve: Is pneumatically operated
and electrically controlled
15. Engine flow demand, when the heating or cooling The minimum idle is in-
demand in one zone cannot be satisfied: creased automatically
16. What is the normal maximum cabin altitude? 8,000 ft
17. What is the Max. negative Diff. pressure for the cabin? 1 psi.
18. It is permissible to use simultaneously packs and LP No
ground unit during long stops in a hot airfield
19. What are the different sources of air for air condition- Engine bleed air and re-
ing and pressurization? circulated air, or if select-
ed, APU bleed air and re-
circulated air.
20. During the exterior preflight on a warm day, in what Open.
position would you expect to find the avionics ventila-
tion system INLET and EXTRACT valves to be in?
21. What happens to the pack flow control valves during They automatically close.
engine start?
, 22. The temperature of each aircraft zone is optimized by A TRIM AIR valve.
means of:
23. When does normal pressurization occur? Pressurization occurs dur-
ing the takeott roll.
24. When does normal depressurization occur? It is complete 1 minute af-
ter touchdown.
25. Under what conditions should the pack flow controller With a low passenger load
be set to LO? to reduce bleed air de-
mand and improve fuel ef-
ficiency.
26. Which statement is correct regarding illumination of Means that either the inlet
the amber AFT ISOL VALVE fault light? or outlet isolation valve(s)
disagrees with the switch
position.
27. Pressurization controllers receive inputs from: LGCIU, ADIRU, FMGS, and
EIU.
28. What computers control the cabin and cockpit condi- One zone controller that
tioned air? passes information and
instructions to two pack
controllers for three zones.
29. When would you select RAM AIR ON? Dual pack failure or smoke
removal.
30. What happens when a temperature selector rotary A signal is sent to the zone
knob is adjusted? controller requesting a dif-
ferent temperature.
QUESTIONS AND ANSWERS
,1. Conditioned air is distributed to: Cockpit, fwd and aft cabins
2. Hot air fault light illuminates on the air conditioning The hot air press. reg.
panel, valve closes and the trim
air valves close.
3. Does the trim air provide the warm air or the cold air Warm air
to the air conditioning system?
4. In case of zone controller primary and secondary 20 deg C for pack one and
channel failure, what temperatures are maintained by 10 deg C for pack two
pack one and pack two?
5. In normal flight in closed circuit configuration, the Passing air through a skin
avionics ventilation system controls the temperature heat exchanger
of the cooling air by:
6. To enable Ram air to the mixture unit, The Ram air Only when ditterential
switch should be used: pressure is less than 1 psi.
7. Pack controller, primary channel failure. The secondary comput-
er operates as a backup
mode and regulation is
not optimized
8. Pack controller, secondary channel failure No ettect on pack regula-
tion backup mode is lost
9. Pack controller, primary and secondary channel fail- Pack outlet temperature
ure is controlled to between
5 and 30 deg C by the
anti-ice valve
10. Hot air pressure reg. valve failed open: No ettect
,11. Bleed air supplied from the APU (APU bleed valve High
open), the pack flow is automatically selected:
12. Trim air valve, each one optimizes the temperature by: Adding hot air
13. Hot air pressure regulating valve: Regulates the pressure of
hot air tapped upstream
of the packs
14. Pack flow control valve: Is pneumatically operated
and electrically controlled
15. Engine flow demand, when the heating or cooling The minimum idle is in-
demand in one zone cannot be satisfied: creased automatically
16. What is the normal maximum cabin altitude? 8,000 ft
17. What is the Max. negative Diff. pressure for the cabin? 1 psi.
18. It is permissible to use simultaneously packs and LP No
ground unit during long stops in a hot airfield
19. What are the different sources of air for air condition- Engine bleed air and re-
ing and pressurization? circulated air, or if select-
ed, APU bleed air and re-
circulated air.
20. During the exterior preflight on a warm day, in what Open.
position would you expect to find the avionics ventila-
tion system INLET and EXTRACT valves to be in?
21. What happens to the pack flow control valves during They automatically close.
engine start?
, 22. The temperature of each aircraft zone is optimized by A TRIM AIR valve.
means of:
23. When does normal pressurization occur? Pressurization occurs dur-
ing the takeott roll.
24. When does normal depressurization occur? It is complete 1 minute af-
ter touchdown.
25. Under what conditions should the pack flow controller With a low passenger load
be set to LO? to reduce bleed air de-
mand and improve fuel ef-
ficiency.
26. Which statement is correct regarding illumination of Means that either the inlet
the amber AFT ISOL VALVE fault light? or outlet isolation valve(s)
disagrees with the switch
position.
27. Pressurization controllers receive inputs from: LGCIU, ADIRU, FMGS, and
EIU.
28. What computers control the cabin and cockpit condi- One zone controller that
tioned air? passes information and
instructions to two pack
controllers for three zones.
29. When would you select RAM AIR ON? Dual pack failure or smoke
removal.
30. What happens when a temperature selector rotary A signal is sent to the zone
knob is adjusted? controller requesting a dif-
ferent temperature.
