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Study- AC and Pressurization
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Can the forward outflow valve be opened on the ground?
No
What is the difference between the forward outflow selector and the manual increase knob
Both open the forward outflow valve, but the manual knob allows for a modulated opening.
How to you change from fully automatic mode to semi automatic mode for the pressurization system?
Cab Set/Norm switch to Cab Set
Can the flight compartment fan be switched on in flight
No
When electrical power is first supplied to the aircraft, the pressurization fault light will illuminate for how long?
2 Secs
at 25,000ft the cabin alt should be what?
8000ft
What happens to the rear outflow valve on touchdown?
It opens
Does the pressurization toggle have to be in manual for the manual increase knob to work
No
What are the 4 modes for the pressurization system
Fully Auto
Semi Auto
Manual
Dump
What is the cabin rate of change when the rate knob is in the detent index
500fpm climb
300fpm decent
What is the automatic feature associated with the AIR COND PACK HOT caution light?
All engine bleeds to the pack shut off
How can smoke be evacuated form the cabin area.
Norm/Cab Set to Cab Set and select a higher altitude, or select rear outflow valve to DUMP using AUTO/MAN/DUMP switch
If operating with only essential services, how can the aircraft be de-pressurized?
Forward outflow valve must be used as the rear needs bleed air to open.
CABIN PRESS warning light indicates what?
That the cabin altitude has exceeded 10,000ft
What occurs when the pressurization toggle is set to AUTO?
The rear outflow valve is controlled by the pressurization computer.
What percentage of AC air goes to the flight deck
30%
Why should the forward outflow valve be slightly opened before selecting toggle to manual when transitioning to automatic?
To prevent a pressurization bump
What is the position of the rear outflow valve when the aircraft is on the ground and the A/C is running
Open
Can pressurization be maintained with only one bleed source?
Yes
What happens when the pressurization toggle is selected to the manual position?
Rear outflow valve closed and pressurization is accomplished by modulating the forward outflow valve.
Author
glennrooke
ID
345148
Card Set
Study- AC and Pressurization
Description
Study- AC and Pressurization
Updated
2019-02-04T00:33:49Z
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