When traveling by plane, why does the plane always circle around the airport when taking off and landing?

Anyone who is attentive will find that the plane will hover at the airport when taking off or landing. This is to adjust the plane to the best take-off condition and then get on the right track. Nowadays, it is impossible for airplanes to have only one flight a day. There are often more flights, so there are also more planes taking off and coming back. So at this time, when the plane is taking off and landing, you often need to follow the leader's orders and make a circle in the air above the airport. If you don't make a circle at this time, if the plane follows its own course, accidents often occur during takeoff and landing, which are irreversible.

At this point, the plane actually needs to turn around and adjust before landing slowly. At this time, the number of paths and runways for taxiing travel is relatively small, so frequent sleepers will inevitably appear to occupy them, and it is often necessary to rotate in the air at this time to wait for a suitable landing. Sometimes when the weather is bad and the visibility is relatively low, it will hover in the sky waiting for orders, just to ensure the safe landing of passengers.

Also, when flying, it is inevitable that we will be forced to return or be unable to fly due to rain or snow. When encountering such weather, the plane will hover in the sky for a period of time. When it is determined that there is no danger on the ground, the air traffic control will issue instructions to the pilot. At this time, the plane will slowly take off or land, thereby judging Are you landing in the correct direction?

Also, there are so many planes at the airport, and they have to fly to all parts of the country. In order to ensure flight order, we must also obey the command of the commander. Although there are no obstacles when flying in the sky, we must also form an orderly world ourselves. to protect the safety of others.