What are the common sense about air travel?

Have you ever flown? Do you know the common sense about air travel? Understanding air travel knowledge can help make our journey more enjoyable. Let the editor of SmartView tell you what common sense you need to know about air travel. Let’s take a look together!

Common sense about air travel 1. Why can’t you carry water and other liquids on an airplane?

When an airplane flies at high altitude, the surrounding air pressure is low, so the boiling point of the liquid also decreases as the altitude increases. For example, the boiling point of water on the ground is 100 degrees, in the mountains it is more than 80 degrees, and in the stratosphere it is even lower. If you carry liquid on a plane, the liquid will boil due to the drop in air pressure, producing a large amount of gas. There is not much space on the plane to accommodate these gases, and it will also cause local high pressure, which will lead to the risk of explosion.

2. Why can power banks only be carried with you and not checked in?

Power banks are mainly lithium batteries. The point is not whether lithium batteries are more active at high altitudes, but that if a fire is not controlled in time within two minutes, it will cause irreversible danger.

The characteristic of lithium battery is that after it catches fire, it will burn from one cell to another until it burns out. When extinguishing the lithium battery fire source, you cannot use traditional methods such as water, otherwise there will be In case of splashing liquid, after extinguishing the fire, the lithium battery must be cooled down to prevent secondary fires. If parts of the plane are burned during a fire, no one can guarantee whether the plane can land safely!

3. Why can’t mobile phones and other communication tools be used on the plane?

Although, when it comes to To date, no aviation accident has been attributed to the use of mobile phones. Some passengers even secretly turned on their mobile phones after the plane took off, took photos and posted them on WeChat Moments, but no accident occurred. But this ban is just in case. After all, mobile phones and other communication tools may interfere with signals. Therefore, for the safety of you and other passengers, do not turn on your mobile phone out of temporary curiosity. No matter how important things are, they are not as important as your life!

4. Why do you need to open the visor during takeoff/landing? Put away the small bench

Open the sun visor, firstly, it will make it easier for the rescuers outside the aircraft to observe the situation inside the cabin and rescue them as soon as possible. Secondly, it will provide auxiliary lighting to prevent the lighting facilities in the cabin from being used. In the event of an accident, it helps passengers observe their surroundings. The purpose of folding up the small bench and straightening the seat backrest is to keep the emergency passage open.

5. Why should seat belts be fastened all the way on the plane?

This is the most important and most easily overlooked point. Even if the indicator light goes out, you cannot unbuckle your seat belt and relax. Due to changeable natural phenomena such as turbulence and strong winds, it is possible for a plane to drop hundreds of meters rapidly. If your seat belt is unfastened at this time, the situation may not be as bad as usual. Therefore, please fasten your seat belt all the way until it comes to a complete stop!!! Then get up to pick up your luggage! Do not unfasten your seat belt or get up to pick up your luggage before the stop!

6. Why do you need to do this when the plane lands? Dim the cabin lights?

The purpose of dimming the cabin lights is to allow your eyes to adapt to the brightness of the outside world first, so that you can identify the surrounding situation. If you need to evacuate the cabin in an emergency, you can make a judgment as soon as possible.

7. Why are airplane windows round instead of square?

This has a lot to do with the integrity of the aircraft fuselage. The higher the plane flies, the greater the pressure difference between the inside air and the outside air. The plane's body will expand slightly, and the pressure will cause the fuselage materials to deform. On a perfect cylinder,

pressure will pass through the material smoothly, but its flow will be interrupted by the window. If the window is rectangular, then its interruption of the pressure flow will be will be more obvious. The most important point is that pressure will accumulate on the four sharp corners of the rectangular window, which may eventually cause the glass to break and the body to be damaged. And if the window is oval, the pressure distribution will be more balanced.

8. Why are there small holes in airplane windows?

The small holes that appear in airplane windows are actually related to the pressure and tension generated by the difference in internal and external pressure. In fact, every window on an airplane is composed of a three-layer structure, and the function of the ventilation hole is to achieve air pressure balance between the outer glass and the middle glass. In other words, only the outer glass is bearing the pressure from the cabin, while the middle glass is used to cope with emergencies.

9. Why is there no parachute on the plane, but there is a life jacket?

Many people cannot understand why there is no parachute on the plane. In fact, there is a certain reason why civil aviation airliners do not have parachutes. The success rate of aircraft emergency landing is relatively high, and the chosen location for emergency landing is often the sea. Therefore, a life jacket is much more useful than a parachute. It must be reminded that after putting on the life jacket, it will be in a dry state. The life jacket can be automatically inflated through the pull ring on the life jacket. But don’t inflate it in the cabin! The next step is, if I give you a parachute, will you use it? We are neither Superman nor 007, nor have we received professional training. As an ordinary person, jumping from a high altitude with a parachute will not be enough. I don’t know how to pull an umbrella, I don’t know how to land, and I don’t know where the landing point is... In this situation with almost zero survival rate, if I give you a parachute, will you jump?

Air Travel Guide 1. Arrive at the airport.

You have to pay attention to the time, because the airline stipulates that check-in stops 30 minutes before flight departure, so you end up at the airport 1 hour before departure.

2. Go through the check-in procedures (that is, change the boarding pass). Check which counter your flight is at. The airport has a display screen telling you which flight is at which counter. Find the corresponding counter and hand your ticket and ID card to the airport check-in staff. If you have large luggage, check it here. Baggage under 20kg in economy class is free, and liquids exceeding 100ML must be checked. Be careful not to carry prohibited items in your checked luggage. After completing the check-in procedures, the check-in staff will return the passenger coupon, boarding pass, luggage ticket, and ID card to you.

3. Pass the security check. Go to the security check channel. There is a security check counter at the entrance of the channel. You hand your ticket's passenger coupon, boarding pass, and ID card to the security inspector. The security inspector will stamp the boarding pass if there is no problem. Then go through the security gate. The items you carry with you must pass through the X-ray security inspection machine next to the security gate, and you must pass through the security gate yourself. If there is no problem with the security check, enter the terminal.

4. Waiting for the flight. After passing the security check, look at the boarding gate indicated on your boarding pass for your flight, find the terminal corresponding to the boarding gate, and wait in the terminal at the gate number. The airport will have a display showing the location of each terminal. If you are not sure, you can ask the airport service staff. Find the terminal and rest there, waiting for the announcement to board the plane. If you smoke, you can smoke in the smoking room. Remember to listen to the radio.

5. Board the plane. After hearing the boarding announcement, a service staff will tear up the boarding pass at the boarding gate. You should go to the boarding gate and hand the boarding pass to the service staff. The service staff will tear off a small piece of the boarding pass and return the other parts to the boarding pass. You, just follow others on the plane with your boarding pass.

Air travel tips? Air ticket confirmation.

To apply for a boarding pass, international flights must arrive at the airport 3 hours in advance and go to the check-in counter of the corresponding airline to apply for a boarding pass. Please check whether the flight number, flight number, and date are correct. If there are any questions, You should go to the ticket office immediately to resolve the matter accordingly. Baggage check-in is divided into two types: random check-in and separate check-in.

General airlines stipulate that hand-carried items should not exceed 5 kilograms. Umbrellas, coats, walking sticks, cameras, semiconductors, books and newspapers for reading on the way, etc. can be carried. Please contact the airline for details on the size and weight limits of checked baggage. Different airlines have different requirements for size and weight limits. Overweight fees will apply for any excess baggage. If you transfer, you need to ask at the departure station whether your luggage can be transferred by yourself (ask the airport or airline personnel). For connecting tickets, the luggage will be checked directly to the destination, but when you arrive at the first stop in the United States, you need to take out the luggage first, go through customs and security inspection, go through luggage transfer (luggage transfer), and finally check it to the destination. Regarding flight delays or missed flights, most students whose flights are not direct flights have booked connecting flights. If the next leg of the flight is delayed due to airline problems, weather conditions, or their own reasons, they need to change their tickets immediately.

You can find the corresponding service staff at the airport to change your ticket. If you cannot find the corresponding airline staff after exiting customs, please consult the relevant staff for the terminal of the airline you are flying on. . When changing your ticket, you must ask the corresponding airline for a change form, and then issue a ticket based on the change form. Students with non-connecting flights need to change their tickets at the airline of the next flight. After changing your ticket, you must contact the teacher or employer of the institution as soon as possible to inform them of the change in arrival time so that they can arrange accommodation, airport pick-up, etc. During the security check, your carry-on luggage must go through X-rays and your body must go through a metal detector. Your coat and shoes must be taken off. Belts, keys, mobile phones, and metal jewelry must all be taken off and placed in boxes. Laptops are subject to separate security checks. The use of electronic products is not allowed during takeoff and landing. Once the flight is stable, mobile phones, computers and other electronic products can be used according to the instructions of the flight attendants.

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