CAE Air Conditioning / Pressurization Flashcards
Can Air Source to Trim Air Only be selected on the ground?
No
What is the max diff pressure on the ground
0.1 psi
Which sources provide air for the AC PACK to operate?
APU, A/C engines, external ground cart
Max positive diff pressure
9.4 psi
What is the max negative diff pressure?
-0.5 psi
Where is the outflow valve located?
Front right wing fairing
What computer controls the outflow valve?
IASC
What cabin altitude triggers a caution light?
8,500’
How many feet are added to cabin altitude to re-adjust for a High Alt mode warning light?
1,550’
What indicates that the landing altitude was set automatically?
The landing altitude display in magenta color
How many safety valves does the CL30/35 have?
2
What is the purpose of the safety valves
To prevent over and under pressurization of the cabin
How is the landing altitude normally set?
Automatically by the FMS
How is the landing altitude manually set?
By selecting MAN on the pressurization panel
When does the automatic Pull up Pull down function operate?
On the ground with the Main Cabin Door open
How many IASC computers does the CL30/35 have?
2
Where is the cabin zone temperature sensor?
Mid cabin right side
What valve divides the left manifold from the right manifold?
XBLEED valve
Where is the cockpit zone temperature sensor?
On the left side of the center pedestal next to the pilot’s right knee
Are the bleed valves pneumatically operated and electrically controlled?
Yes
What is the guarded EMER DEPRESS PBA for?
For fresh air circulation and if fumes or smoke enter the cockpit
What air sources can provide air to the PACKs?
Engines, APU, ground cart
When must the PACK be operating while on the ground?
When the electrical power (Batt or ext) is on for >30min with OAT>40C
What is the pressurization limitation during T/O and landing?
1.0 psi
What type of air is used for pressurization?
Intermediate air (IP air)
Where is delta P displayed?
EICAS, summary page, ECS synoptic page
What is the limitation for extraction of bleed air from the APU for engine start and environmental air?
20,000’ MSL
What is the temperature range in the NORM mode?
15C to 35C
What is the temperature range in the MAN mode?
10C to 70C
What does the PACK provide
Provides conditioned air for the fuselage compartments
How many ozone converters are installed in the CL30/35s?
2
What panel allows the selection of the APU as the bleed-air source?
AIR COND/BLEED Panel
In what manual are O2 duration tables located
QRH Vol1 or FCOM Vol2
At what cabin alt with the crew O2 masks automatically deliver 100% O2 under pressure?
35,000’
What are the 3 modes of operation for the mask oxygen system?
Normal, 100%, Emergency
When O2 bottles are full, what does the gauge next to the outside filler port indicate?
1,850 psi
Which masks receive a reduced rate of O2 pressure?
Passenger
What is the main difference between the AUTO and DEPLOY positions in the O2 system?
Flow rate. The AUTO position flow rate is based on cabin pressure, under DEPLOY it is a high constant rate
What are the components of the O2 system?
O2 bottles, O2 masks, distribution system
Where is the O2 service point loacted?
On the right side of the fuselage directly forward of the right engine
Follow the O2 recommended storage procedures if the A/C is exposed to what temperatures for a prolonged time?
<= -5C
