After the aircraft is sealed up due to the epidemic, how many steps does the airline take?

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 After the aircraft is sealed up due to the epidemic, how many steps does the airline take?


Although the domestic air transport capacity has been restored at present, it may take about three years for the worlds civil aviation to fully recover according to the prediction of several major airlines in the world.

This also brings a problem, the civil aviation industry does not need so many passenger aircraft for the time being, at this time, what should airlines do?

From the perspective of large airlines, although the accelerated retirement plan is the choice of most airlines with old fleet, it is obvious that more aircrafts need to find a place to store them, so that they can return to the sky.

The so-called storage of aircraft, in general, is what we call aircraft parking. Many aircraft need to be sealed after parking.

In fact, it is not uncommon to seal up aircraft. Before the outbreak, we could see many 787 aircraft in the process of taxiing in the capital airport. Many people may be impressed by the engine covered with red cloth (or even the engine under the wings), which is actually a normal appearance of aircraft sealing.

First of all, where should the plane stop? Its natural for everyone to think that the plane should stop on the apron. However, which airport to park on is also very particular.

As the sealed aircraft involves a series of logistics maintenance work in the aviation industry, it is only the first step for the aircraft to slide to the apron and stop. For the aviation enterprises, the follow-up workload is not only large, but also regular.

Therefore, when the aircraft is temporarily sealed, the aviation enterprise will give priority to its own base. Especially during the epidemic period, there are a large number of aircraft that need to be stopped for storage, and it is obviously more realistic to store them in the base.

Thats why there are so many airports in the world, but we can hardly see the airliners sealed up in small airports. On the other hand, we find that even taxiways in large airports have been expropriated.

During long-term storage, airlines tend to be located in different places, preferentially in dry and stable climate areas. These areas are also the places where aircraft cemeteries are located. Therefore, aircraft in aircraft cemeteries are not necessarily to be dismantled. People may temporarily stop for several years, and then go to heaven again.

When it comes to long-term storage, when it comes to storage of 737max, some domestic airlines choose Lanzhou as the storage base, which is also the basic climate reason more suitable for consideration.

Second, what else should the airline do when the aircraft is sealed up.

Generally speaking, for the parking period, if it is not for maintenance, repair and other work, according to the guidance given by the manufacturer, the maintenance workers will check the aircraft according to 7 days, 15 days, 30 days and above to ensure that the aircraft is in normal condition and can be put into operation quickly after the parking.

If the aircraft is expected to be parked for more than 30 days, the airlines usually need to temporarily seal the aircraft. Here are some operation steps.

Secondly, the seats of the aircraft will also be covered, and even dehumidifiers will be put in the aircraft, which is to keep the cabin environment clean. In addition, the water in the toilet water tank and other pipelines will also be drained and cleaned.

Third, we often cover the aircraft engine and landing gear. Why they should be covered? One is to slow down the corrosion of aircraft parts, and the other is to prevent anything from entering the building nest. For example, there has been the embarrassment of bees taking over the engine before.

Of course, before that, for the aircraft with a long storage time, the engine must use special oil seal oil for oil seal operation. The landing gear and control surface shall be cleaned and lubricated with lubricating oil.

In order to prevent the tire deformation of the aircraft caused by long-term parking, if the parking time is more than 3 months, the general maintenance needs to measure the tire pressure, inflate and move the tire to touch the ground during the regular inspection. This is usually to push the aircraft forward or backward for a short distance.

Its also mentioned here that the last step of the operation is often the last step after the aircraft is towed to the storage site

Fifth, all kinds of equipment, switches and batteries (reserve power supply) on the machine are cut off, disconnected and voltage cut off. Of course, different equipment needs different operations when the aircraft is stored at different times. For example, how to store the battery is a big learning. The instrument may also need to be powered on regularly.

Sixth, the long-term storage of aircraft fuel tank needs to be sterilized, and the metal parts may be coated with preservatives.

Seventh, the maintenance should block the wheels and tie down the aircraft.

In fact, aircraft parking and sealing is a big learning, we also briefly introduced above, but from these works, you can also feel the complexity of this work.

For large-scale aircraft parking, although the flight attendants, pilots and so on look relaxed, but for the maintenance friends, there are still a lot of work to be responsible for, absolutely not to put the aircraft on that line.

Of course, what should we do when we save the plane and use it? Obviously, after the above operations, the aircraft can not be put into operation immediately.

In fact, most of the unsealing operations can be regarded as the reverse operation of the above operations, but considering the flight safety, the maintenance needs to carry out a series of checks on the aircraft. At this time, the maintenance may invest more energy than sealing the aircraft.

Therefore, it is not a low-cost matter for airlines to seal or unseal the aircraft, unless it is certain that the aircraft will not be put into use for a long time. After the aircraft is finally sealed in the parking lot, airlines will be cautious and cautious.

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