Air Conditioning Flashcards
True or False: The air conditioning system is controlled using the AIR
COND/PNEUMATIC panel located on the overhead panel.
True
Under normal conditions, air from which pack is delivered directly to the flight deck?
Pack 1
True or False: The air conditioning packs are located in the wing to fuselage fairings.
True
What is the purpose of the air conditioning packs?
The packs cool the bleed air before delivering it to the mixing manifold.
True or False: During single engine operations, a single engine will not be able to supply both packs with bleed air.
False (2.16 Vol 2)
True or False: A single pack can supply sufficient conditioned air for the entire
Aircraft.
True
When a single pack fails, which of the following will be the result?
An EICAS message will be displayed
The temp selector knob for the failed pack will have no effect on the temp of the disabled pack zone.
In order to set the target temperature from the overhead panel for the air
conditioning, you would do what?
Rotate the temperature knob for each pack
(Make slight changes, wait 10 minutes.)
Where is the pack status displayed?
ECS page of each pilots MFD synoptic page
During cruise, how much time should be allowed in between corrections of the temperature control knobs?
10 min.
Which part of the air conditioning system is responsible for making sure that all areas receive conditioned air even if a pack is disabled?
Mixing manifold
How many recirculation fans are there?
2
At which temperature will the gasper shutoff valve open?
Exceeding 95 degree Fahrenheit
Manually selected temperatures for the air conditioning system are displayed where?
ECS synoptic page of each pilots MFD
How can the PAX cabin temperature control be transferred from the flightdeck to the cabin?
Rotating the PAX CABIN knob to the ATTND position
Where are the fans drawing air from in order to cool the FWD E-BAY?
From the flightdeck
How does the forward E-BAY air cooling system monitor its temperature?
A flow sensor is used to monitor the fan/flow health
What will occur if the forward E-BAY fans fail?
The EICAS message “FWD E-BAY FANS FAIL” is displayed
The flightdeck Ram Air Valve is commanded to open when _______.
Both ECS packs commanded OFF or failed
and
Aircraft altitude is less than 25,000 ft
True or False: During normal operations, air from Pack 1 is delivered directly to the flight deck.
True
True or False: There are two fans installed in the aft electronic bays for cooling.
False
Which of the following apply during a smoke removal situation?
Both packs are commanded OFF
[The flightdeck emergency ram air ventilation valve is automatically commanded open]
The gasper air distribution system provides air to _______.
Each pilot and passenger position
True or False: A single bleed air consumer can receive bleed air from multiple sources at the same time.
False
(2.12 Vol 2 “It is not possible to have both the APU and the engines as bleed sources simultaneously”)
