Where do the passenger’s drop down emergency masks get their oxygen supply from?

Where do the passenger’s drop down emergency masks get their oxygen supply from?

The passenger’s drop down emergency masks on airplanes get their oxygen supply from chemical oxygen generators. These generators are located in the overhead compartments above the passenger seats and are activated when the masks are pulled down. The chemical oxygen generators work by a chemical reaction that produces oxygen when certain compounds are heated.

When the masks drop down, the passenger is instructed to place the mask over their nose and mouth and tighten the elastic straps. Once the mask is in place, the passenger can breathe normally and receive oxygen from the generator. The oxygen is provided at a flow rate that is sufficient to meet the passenger’s oxygen needs in case of an emergency situation, such as sudden cabin depressurization or smoke in the cabin.

FAQs:

1. How long does the oxygen supply last in the drop down emergency masks?

The oxygen supply in the drop down emergency masks is designed to last for approximately 12 to 15 minutes. This should provide enough time for the passengers to safely evacuate the aircraft or for the crew to bring the aircraft to a lower altitude where the air is breathable.

2. Can the oxygen supply be extended if needed?

No, the oxygen supply in the drop down emergency masks cannot be extended. It is important for passengers to quickly and safely evacuate the aircraft when instructed to do so in an emergency situation.

3. Are the drop down emergency masks filled with pure oxygen?

No, the drop down emergency masks are not filled with pure oxygen. The oxygen supplied by the chemical oxygen generators is mixed with ambient air to provide a breathable mixture for the passengers.

4. Do the drop down emergency masks have filters to remove smoke or toxins?

No, the drop down emergency masks do not have filters to remove smoke or toxins. They are designed to provide a source of oxygen in an emergency situation, but they do not filter the air.

5. How are the chemical oxygen generators activated?

The chemical oxygen generators are activated when the passenger pulls down on the mask. This action breaks a seal or initiates a chemical reaction that produces oxygen.

6. Can the drop down emergency masks be used for oxygen therapy?

No, the drop down emergency masks are not designed for oxygen therapy. They are specifically intended for use in emergency situations on an aircraft.

7. What happens if a passenger doesn’t pull down their mask during an emergency?

If a passenger does not pull down their mask during an emergency, they may not receive an adequate supply of oxygen. It is important for passengers to follow the instructions of the flight crew to ensure their safety in an emergency situation.

8. Are the drop down emergency masks checked before each flight?

Yes, the drop down emergency masks are checked before each flight to ensure that they are properly secured and functioning. Flight attendants are responsible for inspecting the masks and reporting any issues to maintenance personnel.

9. Can the drop down emergency masks be used if there is no emergency?

No, the drop down emergency masks should only be used in a genuine emergency situation. Using the masks unnecessarily can deplete the oxygen supply and create a false sense of security.

10. Are there different sizes of drop down emergency masks for adults and children?

Yes, there are different sizes of drop down emergency masks for adults and children. The masks are designed to fit over the nose and mouth of the passenger and are adjustable to ensure a proper fit.

11. Are the drop down emergency masks easily accessible?

Yes, the drop down emergency masks are easily accessible as they are located in the overhead compartments above the passenger seats. The masks are designed to be pulled down and activated quickly in an emergency situation.

12. Can a passenger use the drop down emergency mask for another passenger?

Yes, a passenger can assist another passenger in putting on their drop down emergency mask if needed. It is important for passengers to help each other in an emergency situation to ensure everyone’s safety.