Cabin Atmosphere Control Systems Ch. 14 Sec. B

Question 1

1. Pure oxygen ___ (will or will not) burn.

Answer 1

Will Not

Question 2

2. Aircraft oxygen systems should never be serviced with any oxygen that is not labeled ___ Oxygon

Answer 2

Aviator’s Breathing

Question 3

3. Almost all military aircraft now carry oxygen in its ___ (solid, liquid, or gaseous) state.

Answer 3

Liquid

Question 4

4. On-board oxygen generation systems produce oxygen by drawing air through a patented material called a(n) ____

Answer 4

Molecular Sieve

Question 5

5. High pressure oxygen cylinders should be painted ___

Answer 5

Green

Question 6

6. What DOT approval codes should appear on steel aircraft oxygen cylinders?
   a.
   b.

Answer 6

DOT 3AA
DOT 3HT

Question 7

7. Type 3AA oxygen cylinders must be hydrostatically tested to pressure every ___ (what amount) of their working ___ years.

Answer 7

Five-thirds
Five

Question 8

8. The two types of continuous flow oxygen regulators are:
   a
   b.

Answer 8

Manual Type
Automatic Type

Question 9

9. The oxygen regulator used by the flight crews of most commercial jet airliners are of the ___ (continuous flow or diluter-demand) -type.

Answer 9

Diluter-demand

Question 10

10. A rebreather bag type mask is used with a ___ (continuous flow, diluter-demand or pressure-demand)-type regulator.

Answer 10

Continuous flow

Question 11

11. The oxygen masks that automatically drop from the overhead compartment of a jet transport aircraft are of the ___ (continuous flow or demand)-type.

Answer 11

Continuous flow (rebreather)

Question 12

12. Most of the rigid plumbing lines that carry high-pressure oxygen are made of ___

Answer 12

Stainless Steel

Question 13

13. Liquid oxygen systems are referred to using the initials ___

Answer 13

LOX

Question 14

14. The pressure of the oxygen delivered to the regulator by a liquid oxygen converter is usually ___ psi.

Answer 14

70

Question 15

15.___ ___ (what chemical) mixed with appropriate binders and a fuel is used to make oxygen candles.

Answer 15

Sodium Chloride

Question 16

16. A chemical oxygen candle ___ (does or does not) generate heat.

Answer 16

Does

Question 17

17. Oxygen candles have a ___ (short or long) shelf life.

Answer 17

Long

Question 18

18. Once ignited, a chemical oxygen candle ___ (can or cannot) be extinguished.

Answer 18

Cannot

Question 19

19. When a nitrogen cylinder is installed on the oxygen servicing cart it will face the __
    (same or opposite) direction of the oxygen cylinders.

Answer 19

Opposite

Question 20

20. An oxygen system is considered to be empty when the pressure gets down to ___ psi.

Answer 20

50,100

Question 21

21. When servicing an aircraft oxygen system from a service cart having several cylinders, always start with the ___ cylinder having the ___ (lowest or highest) pressure.

Answer 21

Lowest

Question 22

22. Refer to the oxygen servicing chart on page 14-20 [Figure 14-25).
    With an outside air temperature of 30°F. an oxygen system must be filled to __ psi to obtain a stabilized pressure of 1,800 psi at 70°F.

Answer 22

1725 psi

Question 23

23. During oxygen servicing there should be no smoking, open flame, or items which may cause sparks within ___ feet or more.

Answer 23

50

Question 24

24. Aircraft cabin pressurization is controlled by varying the amount of air that is __ (taken in or allowed to leak out).

Answer 24

Allowed to leak out

Question 25

25. Smaller reciprocating engine aircraft may obtain air for cabin pressurization from __ bleed air.

Answer 25

Engine Turbocharger

Question 26

26. Most pressurization systems have what three cockpit indicators?
    a.
    b.
    c.

Answer 26

Cabin Altitude
Cabin Rate-of-climb (vertical speed)
Differential pressure indicator

Question 27

27. The two modes of operation for cabin pressurization are:
    a.
    b.

Answer 27

Automatic
Manual

Question 28

28. The __ (outflow or safety) valve is controlled by the cabin altitude controller.

Answer 28

Outflow