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Questions and Answers
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?
What is a potential discomfort associated with using the emergency overpressure function?
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%?
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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.
