Pressurization

Question 1

temperature control in auto

Answer 1

65F to 88f

Question 2

temperature control in manual

Answer 2

6C to 116C
becomes toggle switch between cool and hot

Question 3

where are the main air valves

Answer 3

above FO

Question 4

times for main air valves to open

Answer 4

1 takes 20 seconds to fully open

#2 waits 30 seconds then opens

Question 5

MAIN AIR VALVE 1/2

Answer 5

indicated main bleed air valve is not in selected position

Question 6

MAIN AIR VALVE 1/2 Ground

Answer 6

valve is open while on ground

Question 7

main air valve and bleed air limit

Answer 7

only on together for 1 minute

Question 8

LP on

Answer 8

only source of bleed air will be low pressure

Question 9

LP only

Answer 9

90% of the time
80 psi
140C

Question 10

LP and HP

Answer 10

uses HP if needed
1% of the time
310C
120 PSI

Question 11

HP air OVHT

Answer 11

mix valve likely failed

Question 12

how is pressure controlled

Answer 12

by amount of air let out of cabin

Question 13

FL 410 has a cabin pressure of

Answer 13

7500, 8.55 psid

Question 14

Max cabin differential

Answer 14

8.55 psid

Question 15

max negative pressure

Answer 15

-0.5

Question 16

max over pressure

Answer 16

8.6 - 8.8

Question 17

cabin triple indicator

Answer 17

pointer - cabin altitude
PSID - shows differential
VSI - for cabin, want 500ft/min

Question 18

rate knob for cabin

Answer 18

changes cabin VSI

Question 19

outer ring

Answer 19

CABIN alt
set at field elevation +400

Question 20

Main air VLV

Answer 20

electrically actuated

Question 21

MAIN AIR VLV Close

Answer 21

MAV and HP valve both closed

Question 22

MAIN AIR VLV LP ON

Answer 22

MAV open, HP valve closed

Question 23

MAIN AIR VLV OPEN

Answer 23

MAV open, HP valve armed

Question 24

main air valve limitation

Answer 24

must be closed before takeoff and landing
during single-engine operations in icing LP ON must be on on operating engine

Question 25

cabin flood switch

Answer 25

opens valve for temp controlled air to enter cabin in right rear at roof level

Question 26

cabin fan switch

Answer 26

electrically operated air to individual outlets

Question 27

cabin floor switch

Answer 27

opens valve to allow temp controlled air to enter floor outlet ducts

Question 28

What does bleed air supply to

Answer 28

Air conditioning Rudder bias Pressurization Hydraulics Engine anti-ice

Question 29

The HP bleed air supplements the LP bleed air at the mixing valve when both main air valve switches are selected to OPEN and

Answer 29

LP bleed-air pressure drops to 27 psi

Question 30

Prior to takeoff and landing, ensure that the flight deck valve and the main air valves are set to the ____ position

Answer 30

CLOSE

Question 31

this occurs when a main air valve switch is moved from the CLOSE position to the LP ON position

Answer 31

the main air valve opens, but HP air augmentation is not allowed

Question 32

the position of the MAIN AIR VLV 1 or 2 switch in which electrical power is applied to a pressure switch is

Answer 32

OPEN

Question 33

When placed in the "open" circuit, the No 1 MAV has a time delay of approximately _____ before it reaches the fully open position

Answer 33

20 seconds

Question 34

Which component in the air conditioning system determines the temperature of the air after entering the water separator

Answer 34

low limit temperature control

Question 35

When the duct temperature limiter senses a duct temperature of 116

Answer 35

the limiter illuminates the DUCt OVHT annunciator and automatically gives reduction in duct temperature

Question 36

Cabin delivery air temperature is controlled by the operation of the

Answer 36

Cabin temp control valve

Question 37

a pressure switch downstream of the PRSOV protects the ACM from overspeed if pressure rises above

Answer 37

40psi

Question 38

when too much air pressure is present the 40-psi pressure switch protects the ACM from overspeed by closing

Answer 38

the No 2 main air valve

Question 39

the switch that controls the auxiliary heating valve to provide additional heating to the cockpit is the

Answer 39

F/DK VLV switch

Question 40

The ____ bus powers the CABIN TEMP-MANUAL mode

Answer 40

PE

Question 41

pressurization system is capable of maintaining a cabin altitude of 7500 feet when the airplane altitude is

Answer 41

41,000 feet

Question 42

the pressurization system can maintain a maximum cabin differential pressure of

Answer 42

8.55psi

Question 43

the maximum allowable negative cabin differential pressure is

Answer 43

.5

Question 44

the fan-operated Venturi provides suction to open

Answer 44

both outflow valves

Question 45

with the CABIN HIGH DATUM not selected, the CABIN ALTITUDE warning annunciator illuminates and the warning horn sounds at ____ feet

Answer 45

9,300 +/- 300

Question 46

what is the ACM

Answer 46

air cycle machine cools bleed air to send to flight deck and cabin

Question 47

Cabin triple indicator

Answer 47

pointer - cabin altitude stripe indicator - VSI for cabin white indicator - PSID

Question 48

how should the rate knob be set

Answer 48

outer ring +400 field elevation when landing inner ring cruise +200 feet in flight

Question 49

what does the butterfly valve do

Answer 49

allows air to go out clears smoke depressurizes cabin