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CL-65 Study Guide > Pneumatic > Flashcards

Flashcards in Pneumatic Deck (35):
1

Normal pressure differential?

8.5 psi

2

Max pressure differential?

8.7 psi

3

Max pressure differential during taxi, takeoff, & landing?

0.1 psi

4

Max negative pressure differential?

-0.5 psi

5

During single PACK ops, what is the ma altitude?

900/900EP - FL250
700 - FL310

6

What does the DISPLAY COOL or ARINC COOL Caution messages mean?

Low airflow behind screens or within the avionics rack

7

How many pressurization controllers (PC's) in the 900?

2, PC1 & PC2

8

When do the pressurization controllers swap?

WOW+3 minutes, or if one PC fails

9

When in auto mode, what is the cabin rate of climb & descent?

+500 fpm
-300 fpm

10

When in manual mode, what range is controlled by the MAN RATE knob?

50 - 3000 fpm
+/- 1000 fpm

11

When will we get a CABIN ALT Caution message?

Cabin altitude between 8,500 to 10,000 ft

12

When will we get a CABIN ALT Warning message?

Cabin altitude >10,000 ft

13

When will CPAM auto deploy pax oxygen masks?

Cabin altitude >14,000 ft

14

When will CPAM turn on NO SMOKING/FASTEN SEATBELT signs?

Cabin altitude >10,000 ft (switch in AUTO position)

15

What causes FAULT portion of a PACK switchlight to illuminate?

Over pressure or Over temperature condition

16

What causes FAULT portion of the PRESS CONT switchlight to illuminate?

Both pressurization controllers have failed

17

ACSC's

Air Conditioning System Controllers

18

How many sections is the bleed air manifold separated into, and by what?

2, by the isolation valve

19

What psi do the engine bleed valves regulate pressure to?

Regulate pressure to 45 psi +/- 3 psi

20

When do the bleed air valves close?

- engines are shutdown
- ACSC signal is removed
- ENG FIRE PUSH switchlight to that engine
- manually on the BLEED AIR control panel

21

When do the high pressure valves close?

- engines are shutdown
- ACSC signal is removed
- ENG FIRE PUSH switchlight to that engine
- manually on the HPV casing

22

Do the LCV & bleed valves do the same thing?

Yes

23

Which side of the bleed air manifold does the LCV deliver bleed air to when the ISOL valve is closed?

Left

24

What can close the APU LCV?

- APU shutdown
- loss of ECU or ACSC

25

How many ACSC's?

2 (ACSC1 for left eng/ACSC2 for right eng)

26

Can the APU provide anti-ice?

No

27

Does bleed air switch from the APU to engines in-flight automatically?

Yes

28

How are bleed air leaks detected in the bleed air ducts & anti-ice ducts in the fuselage & wings?

Dual loops

29

What is used to detect bleed air leaks in the cowl anti-ice ducts located in the engine pylons?

Pressure transducers

30

Is there a test system for the bleed air leak detection system?

No

31

Must both loops detect the high temperature?

Yes, unless one is inoperative

32

AILC

Anti-Ice Leak-Detection Controller

33

Where is the pneumatic system controlled from?

BLEED AIR control panel

34

What pneumatic valves will close if the ENG FIRE PUSH switch is pressed?

BLEED VALVE & HPV

35

What will close if the APU FIRE PUSH switch is pressed?

LCV