The remains of the victims were found at the crash site of the Indonesian passenger plane! What usually causes passenger plane accidents?

People who often fly know that flying is the safest way to travel. The reason is that the accident rate per 10,000 hours is low, which means that this data is compared with other travel tools. Of course, nothing is perfect in the world, and accidents will happen on the plane. Once an accident happens on the plane, the death rate will be quite high. Any report about the plane crash will immediately lead to discussion about the safety of the plane and the threat of terrorist attacks. However, according to the known facts. With the increasing reliability of aircraft performance, the proportion of crashes caused by pilot errors has gradually increased, accounting for about 50% at present. Aircraft is a very complicated machine, which needs a lot of operation.

Because pilots must actively participate in every step of flight, there are many opportunities for errors, from programming errors in flight management computer systems to miscalculation of necessary fuel consumption. Although such a mistake is regrettable, it should be clear that the pilot is the last line of defense when a catastrophic mistake occurs. Mechanical failure, although the quality of aircraft design and manufacturing is changing with each passing day, equipment failure still accounts for 20% of aircraft accidents. Today's aircraft engines are obviously much more reliable than half a century ago, but catastrophic failures still occur from time to time. Sometimes, the introduction of new technology will lead to new fault types. In the 1950s, the high-altitude flight and the use of pressurized cockpit jet aircraft brought a new problem of metal fatigue caused by fuselage pressurization cycle. Several serious air crashes caused by this problem led to the final grounding of Comet Havlan.

The bad weather caused about 10% of the air crash. Although many new electronic devices have been put into use, including gyroscopes, satellite navigation systems and meteorological data systems, aircraft are still vulnerable to storms, heavy snow and fog. 1958 February. A British European Airlines twin-engine passenger plane ran off the runway and caught fire while trying to take off at Munich Nimes Airport. Of the 23 victims, 8 were from Manchester United Football Club. This incident is also known as the Munich air crash. Later investigation showed that the snow on the runway slowed down the speed of the plane, making it unable to reach the speed needed for takeoff.

Other forms of human error, the rest of the air crash is attributed to other types of human error, including air traffic controllers, dispatchers, stevedores, oilers or maintenance engineers. Sometimes, in the case of working for a long time, maintenance engineers will make potentially catastrophic mistakes. For example, 1990, the windshield of a British Airways plane flew off and almost killed the captain. According to the report of the Aviation Accident Investigation Office, almost all the 90 safety bolts of the windshield are smaller than the standard diameter. When replacing the windshield, the maintenance engineer did not use the standard screws according to the maintenance manual, but found the wrong thinner screws. Because of poor sleep, the engineer didn't pay attention to it during maintenance, and there were problems with his feeling and judgment.