Block 3 & Final Exam Questions

Question 1

Primary Purpose for Pressurization:

Answer 1

Protection from Hypoxia and DCS

Question 2

Isobaric Control:

Answer 2

Constant Cabin Altitude

Question 3

Isobaric Differential

Answer 3

Cabin altitude varies with flight altitude

Question 4

Positive aspects of Pressurization:
Two main Aspects

(5) for first
(3) for second

Answer 4

Protection and Comfort:

Protection:
Oxygen Masks not needed
Hypoxia problems minimized
DCS risk minimized
Trapped gas problems minimized
Reduced Fatigue

Comfort:
Temperature, ventilation, and humidity controlled
Air is exchanged 20-30 times an hour
Freedom to move around cabin.

Question 5

Negative aspects of Pressurization: (4)

Answer 5

Added aircraft weight, cost, maintenance
Any component can fail at anytime
Possibility of contaminated air
Risk of loss of cabin pressure

Question 6

Factors that control rate & time of decompression

3

Answer 6

Size of Opening
Pressure Differential
Flight Altitude

Question 7

Types of Decompression

Answer 7

Slow
Rapid
Explosive

Question 8

Physiological effects of Rapid Decompression

Answer 8

Hypoxia

Evolved Gas Sickness (DCS)

Question 9

Actions following Rapid Decompression and when they should be done by. (6)

Answer 9

Don Oxygen Masks immediately (91.211b) - 5s
Initiate Descent - 10s
Attempt to determine structural integrity - 15s
Don personal thermal protection -30s
Descend to safe altitude
Check passengers (get below 15m’ within two minutes if no 02)

Question 10

Greatest threats of Decompression

Answer 10

Hypoxia & Temperature

Question 11

Most immediate need if loss of pressurization?

Answer 11

Oxygen

Question 12

MUST GET AIRCRAFT DOWN

Answer 12

ASAP!