High Altitude Ops

Question 1

Types of Oxygen System

Answer 1

Continuous Flow
Diluter Demand
Pressure Demand

Question 2

Continuous Flow

Answer 2

The flow of oxygen is constant whether you’re inhaling, exhaling, or pausing in between breaths.
This system is typically used at 28,000 feet and lower.

Question 3

Diluter Demand

Answer 3

It gives the user oxygen on-demand (during inhalation) and stops the flow when the demand ceases (during exhalation). This helps conserve oxygen.
This system is typically used at altitudes up to 40,000 feet.

Question 4

Pressure Demand

Answer 4

Pressure Demand is a forceful oxygen flow that is intended to slightly over-inflate the lungs.

This will, in a sense, pressurize the lungs to a lower altitude, thus allowing you to fly at altitudes above 40,000 feet, where 100% oxygen without positive pressure will not suffice.

Question 5

Two Categories of Decompression

Answer 5

Explosive Decompression

Rapid Decompression

Question 6

What is Rapid Decompression

Answer 6

A change in cabin pressure faster where the lungs can decompress faster than the cabin. (no lung damage)

Question 7

What is Explosive Decompression

Answer 7

A change in cabin pressure faster than the lungs can decompress. (lung damage)