Air Management Flashcards
List the items that use bleed air
Environmental control system (ECS) Engine start Engine, wing, & horizontal stab anti-icing system Cargo heating system Main cabin door pressurization seal
When is the cabin temp control xferred to the VIP seat panel?
When the detect C is selected to the PAX CABIN TEMP control knob
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 CABIN APU amber light
When is the Outflow Valve (OFV) indication on the Environmental Control System (ECS) synoptic page displayed?
Only available on the ground
What are the potential sources of bleed air that the Pneumatic System Controller (PSC) can automatically select from?
Engines, APU, external cart
Is it possible to have bleed from the APU and engines simultaneously?
No
During normal operation on the ground and for taxiing, what is the primary source of bleed air?
The APU
What is the primary source of bleed air in flight?
Engines
When will the bleed air source be automatically transitioned to the engines?
When plane starts running for takeoff (engines TLA’s higher than 50*)
The xbleed shutoff valve is automatically commanded to close for what conditions?
Bleed leakage, over pressure, engine fire, or if a failure condition is identified
Can an external ground connection be used to supply pressurized air for an engine start?
Yes
If a huffed cart is being used and is NOT adjustable, what range should the pressure be in?
Between 32 - 60psi
When is fast cooling/warming enabled on hot/cold days?
When the difference between the cockpit/cabin temp set point and cockpit/cabin zone temp is 6*C or higher
What happens to the recirculation fan during fast cooling/warming ops?
Automatically sets higher speed to optimize system performance
If the air conditioning pack fails what does the PSC automatically do?
Engages the pack backup operational mode and controls cabin and cockpit temp.
