Podcast
Questions and Answers
What is the primary function of the overpressure knob in the oxygen system?
What is the primary function of the overpressure knob in the oxygen system?
At what altitude will the user automatically receive pure oxygen instead of an air/oxygen mixture?
At what altitude will the user automatically receive pure oxygen instead of an air/oxygen mixture?
What is a potential discomfort associated with using the emergency overpressure function?
What is a potential discomfort associated with using the emergency overpressure function?
Which position of the overpressure knob is used for testing the microphone?
Which position of the overpressure knob is used for testing the microphone?
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What happens when the 100% oxygen selector is moved to 100%?
What happens when the 100% oxygen selector is moved to 100%?
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Study Notes
Oxygen Delivery Modes
-
Normal Mode:
- Delivers an air/oxygen mixture on demand below 35,000 feet.
- Provides pure oxygen above 35,000 feet.
-
100% Selector:
- When activated, delivers pure oxygen on demand, regardless of altitude.
-
Emergency Function (Overpressure Knob):
- Controlled by a push and turn knob.
- Allows constant oxygen flow, not just on demand.
- Pushed Position: Momentarily provides overpressure for clearing the mask and testing the microphone.
-
Turned Position:
- Provides continuous overpressure.
- Used at very high altitudes to prevent inhaling smoke and noxious gases.
Breathing Considerations
- Breathing out can be uncomfortable in the emergency mode.
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Description
Test your knowledge on the various oxygen delivery modes used in aviation. This quiz covers normal modes, 100% selectors, and emergency functions essential for safe breathing at different altitudes. Understand the mechanisms and considerations involved in oxygen delivery.
