Air Management Flashcards
List the items that use bleed air.
Environmental Control System (ECS); Engine
start; Engine, wing, and horizontal stabilizer
anti-icing system; Cargo heating system (optional);
Main cabin door pressurized seal; Cabin
Pressure Control System (CPCS). (AOM 9-02-40)
When is the cabin temperature control transferred
to the VIP seat panel?
When the detent C is selected on the PAX CABIN
TEMPERATURE CONTROL KNOB (AOM 9-02-30)
In the event of a bleed leak detection, what light
will illuminate in addition to an associated CAS
message?
The PACK, BLEED 1, BLEED 2 or BLEED APU
the amber light (AOM 9-02-30)
When is the Outflow Valve (OFV) indication on
the Environmental Control System (ECS) synoptic
page displayed?
It is only available on the ground (AOM 9-02-30)
What are the potential sources of bleed air that
the Pneumatic System Controller (PSC) can automatically
select from?
Engines, the APU and the external connections
AOM 9-02-40
Is it possible to have bleed from the APU and the
engines simultaneously?
No (AOM 9-02-40)
During normal operation on the ground and for
taxiing, what is the primary source of bleed air?
The APU (AOM 9-02-40)
What is the primary source of bleed air in flight?
The engines (AOM 9-02-40)
When will the bleed air source be automatically
transitioned to the engines?
When the airplane starts running for takeoff
engine TLAs higher than 50°) (AOM 9-02-40
The XBSOV (cross bleed shut off valve) is automatically commanded to close for what conditions?
In case of bleed leakage, overpressure,
engine fire, or if a failure condition is identified
(AOM 9-02-40)
Can an external ground connection be used to
supply pressurized air for an engine start?
Yes (AOM 9-02-40)
If an external pneumatic power source is being
used and is not adjustable, what range should the
pressure supply be in?
Between 32 psi and 60 psi (AOM 3-01-35)
When is fast cooling enabled on hot days?
When the difference between the cabin/cockpit
temperature set point and the cabin/cockpit
zone temperature is equal to or higher than 6°C
(AOM 9-02-50)
When is fast warming enabled on cold days?
When the difference between the cabin/cockpit
temperature set point and the cabin/cockpit
zone temperature is equal to or higher than 6°C
(AOM 9-02-50)
What happens to the recirculation fan during fast
cooling and fast warming operations?
It automatically sets a higher speed to optimize
system performance. (AOM 9-02-50)
If the air conditioning pack fails what does the
PSC automatically do?
It engages the pack backup operational mode
and controls cabin and cockpit temperature
(AOM 9-02-50)
What is ram air ventilation used for?
Non-pressurized flight or for smoke evacuation
AOM 9-02-50
When will the PSC command the emergency RAM
air door to open?
In case of loss of the air conditioning PACK and
the PACK backup systems (AOM 9-02-50)
How can the emergency RAM air door be manually
commanded to open?
Through the DUMP button on the
PRESSURIZATION control panel (AOM 9-02-50)
How is the Cargo Heating System operated?
Automatically by the PSC (AOM 9-02-55)
When is the main cabin door pressurized seal
inflated?
After takeoff (AOM 9-02-60)
How can the outflow valve be modulated?
Either automatically or manually
AOM 9-02-70
What position are the Negative and Positive Pressure Relief Valves (NPRV and PRV) normally in?
Closed (AOM 9-02-70)
What does pushing in the MODE selector button
on the PRESSURIZATION panel allow for?
Manual control of the pressurization system
through the CABIN ALT knob (AOM 9-02-30)
What is the cabin altitude rate of change when
moving the CABIN ALT knob UP or DN?
50 ft/min steps (AOM 9-02-30)
What happens when the DUMP button is pressed
in the automatic mode of operation?
The cabin is depressurized at a constant rate
of change of 2,000 ft/min up to 12,000 ft
and the emergency RAM air door is opened
(AOM 9-02-70)
What happens when the DUMP button is pressed
in the manual mode of operation?
The cabin rate of change will increase with the
duration of the dump command; until either the
command is removed, or the altitude-limit function
disables it when the cabin altitude reaches
14,800 ft ± 200 ft. The emergency RAM air door
is also opened (AOM 9-02-70)
What is the maximum differential pressure for
a 6,000 ft cabin altitude? For a 5,800 ft cabin
altitude?
9.64 psid; 9.73 psid (AOM 2-48)
What is the maximum differential overpressure?
10.4 psid (AOM 2-48)
What is the maximum differential negative pressure?
−0.5 psid (AOM 2-48)
What is the maximum differential pressure for
takeoff and landing?
0.2 psid (AOM 2-48)
