Podcast
Questions and Answers
What is the primary purpose of the extraction fan in aircraft lavatories and galleys?
What is the primary purpose of the extraction fan in aircraft lavatories and galleys?
When does the extraction fan in the lavatory switch off?
When does the extraction fan in the lavatory switch off?
How does cabin air enter the lavatory?
How does cabin air enter the lavatory?
What feature might aircraft have to ensure continued ventilation in case of fan failure?
What feature might aircraft have to ensure continued ventilation in case of fan failure?
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Where does the fresh conditioned air for the lavatories come from?
Where does the fresh conditioned air for the lavatories come from?
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Study Notes
Air Ventilation System
- Air from lavatories and galleys is removed due to potential odors, high temperature, and humidity.
- A ventilation system with ducts and extraction fans removes this air.
- The extraction fan pushes the air towards the outflow valve.
- The fan operates continuously with available electrical power or shuts off when sufficient differential pressure is present to move the air.
- A backup fan is available in case the primary fan fails.
- In lavatories, cabin air enters through a door grill and is extracted through a ceiling duct.
- A small amount of fresh, conditioned air enters through a separate duct from the cabin distribution system.
- Galleys are ventilated using the same system.
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Description
This quiz covers the basics of air ventilation systems used in lavatories and galleys. It discusses the mechanisms by which air is extracted and the importance of continuous operation for maintaining air quality. Also highlighted are the features such as backup systems and the integration with cabin air distribution.
