What is the main cause of plane crashes

According to statistics, there are an average of two air crashes caused by lightning strikes every year in the world. However, since the aluminum alloy used as the aircraft shell is a good conductor, when the aircraft is struck by lightning, the current will spread through the aluminum alloy shell, which generally does not pose a serious impact on the aircraft.

There are a lot of them. Mechanical failure.

There is also vandalism, etc.

Because the driver dozed off!

Mechanical failure. In aircraft delay and accident analysis, the most common cause is mechanical failure. Mechanical failures are common such as landing gear can not be retracted, engine failure, abnormal instrument display, etc., generally before take-off can check out a lot of mechanical failures, so there are very few sudden mechanical failures that really appear in the middle of the flight.

Recently, China Southern Airlines has developed a remote diagnostics and real-time tracking system for aircraft. The system can effectively improve the safety quality of airlines and reduce mechanical failures. The system can quickly and accurately decode the relevant information of the aircraft to determine the fault**, which can be used by maintenance personnel to consult the relevant sections of the maintenance manual and determine the troubleshooting measures.

Harsh climate.

In April 1987, a Chinese plane encountered a thunderstorm somewhere in South China, and the plane suddenly had a strong turbulence and dropped its altitude sharply. From the flight recorder (i.e., the black box), it was found that the aircraft flew at an altitude of 1,000 meters to 250 meters in 27 seconds, with an instantaneous maximum descent rate of 40 meters per second. It can be seen that thunderstorms directly endanger flight safety.

Severe weather such as thunderstorms, thunderclouds, typhoons, tornadoes, strong turbulence and low clouds, low visibility, and icy runways over the route or airport pose a direct threat to aircraft structures and communication equipment, as well as aircraft take-off and landing.

In the cold north, the first flight in the morning is often "frozen" overnight at the airport, so the plane needs to be thawed before take-off in the morning. If the relevant staff is negligent and takes off without removing the thin ice, especially if there is still thin ice left on the wings, the aerodynamics of the entire aircraft will be damaged, and the aircraft will crash due to lack of power. The body of the aircraft also freezes when flying in the clouds below 6,000 meters.

Ice destroys the streamlining of the fuselage and wings, making the performance of the aircraft worse, especially those powered by propellers, which are more potentially dangerous, so half of the airliners are now required to fly at altitudes above 6,000 meters. The National Center for Atmospheric Research is testing a new radar system that can identify tiny water droplets in clouds that cause ice formation to help pilots avoid dangerous areas.

Electromagnetic interference.

According to statistics, in recent years, there have been more than 20 flight accidents caused by electromagnetic interference every year around the world, so many airlines around the world have stipulated that the use of mobile phones is prohibited when flying aircraft. Why is it dangerous to use your phone on a plane? It turns out that the navigation equipment on the aircraft uses electromagnetic waves to determine the direction, and it can measure the accurate position of the aircraft after receiving the electromagnetic waves continuously emitted by the ground navigation station.

When the mobile phone is working, it will also radiate electromagnetic waves, which can interfere with the navigation equipment and control system on the aircraft, so that the automatic control equipment of the aircraft receives the wrong information, carries out wrong operations, causes dangerous situations, and even crashes the aircraft. In addition to mobile phones, pagers, laptops, and game consoles also emit electromagnetic waves, so these devices cannot be used on airplanes. In addition, electromagnetic waves generated by astronomical phenomena such as sunspots and the Northern Lights can also interfere with the normal navigation of aircraft.

Generally speaking, the occurrence of air accidents can be attributed to the following three reasons: the design defects of the aircraft itself, human factors (including pilot operation error, ground maintenance engineers not operating in accordance with regulations, air traffic control command errors, etc.) and natural factors.

1. Mechanical failure.

2. Harsh climate.

3. Electromagnetic interference.

4. Fuel tank**.

5. Big bird attack.

Hello, as a professional who is related to aviation, I must introduce it.

In recent times we have been seeing this kind of news that a certain flight was due to passengersToss a coin for blessingsDelay. Some people think that it is just a small coin, and what can make a big difference? In fact, once these coins are sucked into the engine, the high-speed rotating engine can easily be damaged by this hard objectThe plane crashed and people died

To do so is a joke on the lives of hundreds of people. Once an accident like this occurs, it is a typical plane crash caused by human factors.

For plane crashes, the main causes are:Human factors, mechanical failures, environmental factorsWait a minute. Let's give a few examples.

The first thing that comes to mind,The human factor, that is, because of human error-induced flight accidents, according to statistics, can be as high as 70% 80%, and such accidents are oftenMore terrible than a plane crash caused by a mechanical failure。On May 25, 1979, an American DC-10-10 passenger plane took off due to the sudden loss of the left engine, which caused the flaps to lose control and the main instrument to lose powerBad handler, resulting in the death of 271 people on board and 2 people on the ground. In terms of the number of people killed on board, this incident is still the largest number of air disasters in the history of the United States.

Mechanical failure. The plane crash caused by the plane crash is also an important factor in the plane crash, and this item actually overlaps with the human factor, because many of them involve improper maintenance of the aircraft. On 25 May 2002, a China Airlines Boeing 747-200 flying from Taiwan's Chiang Kai-shek International Airport to Hong Kong International Airport disintegrated and crashed at an altitude of 10,640 metres, killing all 206 passengers and 19 crew members (including the pilot, co-pilot and flight engineer). The cause of the accident was at the time of repairThe entire skin of the tail was not replaced in accordance with the maintenance instructions, where metal fatigue accumulates, and the structure collapses at high altitudes.

Environmental factorsThis includes the various dangerous weather that the questioner said, such as thunderstorms, precipitation, strong convection, and so on. On July 28, 2010, when a Pakistani passenger plane was about to land in Islamabad, it was suspected that it was encountering heavy rain and dense fog and crashed in the mountains near its destination, killing all 152 people on board.

Of course, there are also some plane crashes caused by design problems of the aircraft itself, caused by bird collisions, and terrorist attacks.

But in fact, according to the calculation of probability, the air crash isAbsolutely small probability event, especially the level of domestic civil aviation safetyAt the forefront of the worldThe relevant practitioners have undergone extremely strict training and screening, and we do not need to panic because of these very small and very small probability events.

Thanks for reading.

How does an airplane connect with the ground in the sky, and what causes a plane to lose contact?

There are many reasons for plane crashes, at present, every crash of the plane flight will be a lot of people's attention, most of the reasons will be announced after the crash, generally the plane will not crash under normal circumstances, some major accidents in addition to the factors that are thought to be machine failure, bringing irreversible major situations.

Most of them are caused by heavy rain and thunderstorms.

Human errors, machine failures, weather hazards.

Accidents involving pilots themselves account for more than 80% of total accidents.

When the pilot is in a bad mood.

The sky thundered and the pilot was very sleepy.

The cause of the 2022 China Eastern Airlines crash is still under investigation, and industry analysis is related to the following three reasons:

1. Reason 1: The pilot intentionally committed suicide.

In 1997, a Singapore-based SilkAir passenger plane crashed in Indonesia in a similar situation. Later, the local ** investigation found that the reason was most likely because the captain was bent on seeking death after the failure of the investment. However, this scenario is unlikely.

2. Reason 2: Severe convection warning.

According to the Wuzhou meteorological forecast, at around 12 noon on March 21, a strong convective weather warning was issued in the past, saying that until March 23, there will be heavy to heavy rain in Wuzhou City, and there may be short-term strong convection, thunderstorms and windy weather, and the temperature will also plummet by more than 6-10 degrees Celsius, reminding the local people to pay attention to precautions. However, it is worth noting that the time of the China Eastern Airlines crash was in the afternoon, and there were no thunderstorms or rain at that time, so the possibility of weather reasons is relatively low.

3. Reason 3: maintenance problems.

Affected by the epidemic in the past two years, in order to reduce the pressure on its operation, China Eastern Airlines mentioned in the "2021 Semi-annual Report" released last year that it would reduce costs by saving aviation fuel and strictly controlling maintenance costs.

In general, the latest news of the 2022 China Eastern Airlines crash is that the crashed flight MU5735 is being rescued, and the cause of the crash is still under investigation.

1. Human factors.

Most of the causes of aircraft crashes are caused by human factors, such as ground command errors, uncoordinated crew cooperation, lax maintenance and testing, and pilots not doing their jobs well. Take the Air France Flight 447 crash in 09 as an example, due to the improper operation of the pilot and the technical hidden dangers of the Airbus A330 aircraft, all 228 people on board were killed.

2. The cause of environmental gas rush.

Weather is also another major cause of plane crashes, so air crashes can happen at any time. However, this probability is very small, and the airport will generally delay or cancel flights during bad weather. The Armenian comic in '06 The A-320 airliner crash was caused by bad weather.

There are many reasons for the crash of the plane, and it is generally very Suichang that the weather is worse than the one, or there are some failures in the spare parts of the aircraft, and some are man-made reasons.

A plane crash can be caused by a variety of reasons, and here are some of the possible causes:

1.Mechanical failures: such as engine failures, control system failures, electrical system failures, etc.

2.Human error: such as operation error, pilot negligence, pilot misjudgment, etc.

3.Weather conditions: Extreme weather conditions, such as high winds, hail, thunderstorms, etc., can lead to plane crashes.

4.Fuel problems: Poor fuel management, fuel system failure, etc., can cause the aircraft to lose power.

5.Adverse air situation: e.g. collision with other aircraft or obstacles, bird strikes, etc.

6.Equipment failures: such as radar failures, navigation system failures, sensitive core communication failures, etc.

7.Terrorist attack or vandalism: An attack or intentional destruction of aircraft equipment may result in a crash of the aircraft.

It is important to point out that every plane crash requires a detailed investigation and analysis to determine the specific cause.

The causes of plane crashes are generally human factors, mechanical failures, meteorology, environmental and other factors.

According to the U.S. Army Air Corps' flight accident statistics for fiscal years 1978 to 1982, during this period, an average of 91 major flight accidents occurred each year, of which 27 were fatal accidents (i.e., first-class accidents) and non-fatal accidents (i.e.

second- and third-class accidents) and 64 cases.

In these accidents, the human factor is the main cause of accidents, accounting for 75% of the total accidents; This was followed by mechanical failures (including equipment failures), accounting for 29%; Other factors such as meteorology, environment and other factors account for 5%.