Questions

1.

What is a minimum supplemental oxygen requirement to be supplied in a

pressurized aeroplane during an emergency descent?

a.

A supply of oxygen sufficient for all crew and passengers to enable a shallow

rate of descent to 10 000 ft or 2 hours whichever is the longer

b.

A supply of oxygen for the crew only for the entire time the aeroplane cabin

pressure is above 8 000 ft

c.

A supply for all crew and passengers sufficient for a constant rate of descent

from the aeroplane’s maximum certificated operating altitude to 15 000 ft in

10 minutes

d.

A supply for 10% of passengers whilst the cabin pressure is over 13 000 ft

2.

In a rapid or explosive decompression:

a.

the cabin pressure control system immediately reduces the cabin pressure to

ambient pressure to prevent the fuselage integrity being destroyed

b.

the cabin altitude quickly or instantaneously reduces to ambient (outside)

pressure

c.

the cause of the decompression is usually catastrophic failure of the pressure

12

hull

d.

cabin pressurization system failure will be the first indication that something is

Questions

wrong

3.

The difference between slow and rapid decompression is:

a.

a rapid decompression will be immediately noticeable, a slow decompression

will require instrumentation to detect the failure

b.

a rapid decompression is caused by a pressure hull rupture whereas a slow

decompression is caused by system failure

c.

the rate at which the cabin altitude climbs with respect to the desired climb

setting or the automatic control setting

d.

the speed with which the cabin altitude rises with respect to the ambient

(outside) pressure

4.

During a slow decompression, passengers will notice:

a.

the cabin temperature will fall as the pressure reduces

b.

body cavities (sinuses, ears etc.) will become pressurized and may require

assistance in venting

c.

as soon as the pressure falls, the oxygen drop-out system will operate

d.

no contra effects, as slow depressurization has no effect on the human body

5.

During a rapid or explosive decompression, passengers may notice:

a.

gross discomfort, breathlessness, possible damage to sinus cavities

b.

tunnel vision and sensorial depletion

c.

marked reduction in night vision

d.

pain in muscles and joints caused by the bends

1

2

3

4

5

6

c

b

d

b

a

d