Thousands of aircraft were parked due to the lack of demand and flight restrictions. In such a situation, it is more profitable for airlines not to fly than to carry empty seats, burning kerosene.
When the downtime exceeds 14 days, aircraft must be preserved. For such situations, manufacturers have developed special regulations. However, for some regions, they differ to take into account their specifics.
The largest European manufacturer of Airbus airliners provides the following examples of hazards for long-term storage in some countries.
For example, in the Caribbean region, when preserving, it is necessary to take into account a humid climate and salty air, which increases corrosion.
In the Middle East, locust problems can bring storage problems. That is why it is important to close all possible penetration points of insects inside the airliner.
In the northern regions, for example, Siberia, air temperature can drop below 40 ° C. This makes plastic and rubber parts fragile, which requires additional care or replacement.
In Asia and Northern Europe, high humidity is becoming the main enemy. If preservation is not carried out correctly, liters of water may accumulate in the cabin, which will lead to mold and an unpleasant odor. Therefore, proper sealing becomes important to reduce the penetration of moisture, which at the same time allows the evaporation of liquids.
In Japan, typhoons become the No. 1 problem. Standard parking procedures provide for wind power up to 75 knots (139 km / h). During typhoons, it can reach 100 knots (185 km / h). To prevent the aircraft from moving and getting damaged, it is recommended that they are moved to hangars.
However, the area of the hangars is not enough to accommodate all airliners. And in some cases, being in a hangar can pose an additional danger to aircraft.
In this case, the aircraft parked in the open air with several precautions. They fill their fuel tanks to make the structure heavier, and to remove the effect of windage, they remove the protective film.