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Son 20 years of the attacks of the 9/11 O 11 September 2021 and since that day aviation changed forever. Foto Telegram.

We all remember as if it were yesterday having seen on the news how the Twin Towers went up in flames with shocking images.

In my personal case, I was at school and all the activities stopped and we sat next to the television to watch over and over again the videos of commercial airplanes hitting one or another building., in an infinite loop.

Fear and worry gripped everyone., classes were suspended minutes later and we were sent with our families for safety.

Not only the world changed and one of the most serious air crisis began due to a global fear of flying at the risk of possible new attacks, but also that it forced aviation to change its security protocols forever, changing our way of flying.

What changed in aviation after the terrorist attacks? 9/11?

Were 4 planes Boeing that that day they were used for the known purposes that marked the world, which took three years to recover the numbers of passengers carried before the attacks.

Possibly there are many things that will seem logical that have been reinforced, but others in the day to day of the industry perhaps you have not noticed seeing it as normal, but before the 11 September was not like that and we are going to review them:

• Reinforced or armored cockpit doors.
  • Changed the way and who can enter or not to the cabin.
• Security cameras or visors to be able to have a vision of what is happening outside the cockpit.
• Review of strict security filters such as requiring to remove shoes, separate electronic equipment, do not tackle with liquids and other.
• Review of traces of bombs in security filters and new machines for their detection.
• Crew training to act in case of attempted hijacking.
• New approach for pilots in case of attempted hijacking (do not negotiate, prevent entry to the cabin as necessary and land as soon as possible).
• Limit access to boarding areas to passengers only, no longer familiar.
• Always ask for an identity document and boarding pass.
• Prohibition of boarding with knives or similar of any kind (before it was possible if they were under 10 centimeters).
• For example in USA Authorization was given for pilots to carry a firearm in flight and for more specialized agents to act as passengers.
• The use of dogs for threat detection increased.
• started in the 2009 the use of the famous «Full body scann».

Over the years, other security measures and layers have been applied, always hand in hand with technology, For example, the newest scanners are capable of joining hundreds of small parts belonging to a firearm that is divided into a suitcase and using artificial intelligence technology to detect it by joining each of these parts virtually..

Investment and significant advances in technology and safety practices have made aviation safer than ever after the 9/11, from the airport experience to the flight stage.

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