Events that increased flight safety

Worldwide air crashes that made the flight safer

- Flight 783/057, BOAC on May 2, 1953, flying from Calcutta to Delhi. There were two more air disasters afterwards, for the fleet of the first Comet-1 operating jet aircraft to be stopped from flying to the cause. Configuration of the structure of the passenger compartment strength has suffered serious cracks due to high pressure pressure differences. Until the appearance of the Comet-4 type, which had the oval glazing structure in place of the large-size squares at Comet-1, the plane was no longer in flight until 1959.
- The introduction of black boxes in 1958 on the Douglas DC-8 passenger airplanes yielded much more accurate results on the cause of Douglas DC-8 airborne collisions with United Airlines and Lockheed Super Constellation , the 266th Trans World Airlines flight 266. The conclusion was that the DC-8 plane was approaching a higher airport rate than expected by shortening the runway path and ending up with the Constellation at an angle different flight. From that moment on, the way of using flight chairs changed to prevent such disasters in the future.
- the ground crash between 27 March 1977 between Boeing-747 KLM 4805 and Boeing-747 Pan Am 1736. On the occasion of the research, multiple causes were identified, such as fog, disobedience to the controls given by the control tower and misunderstandings between pilots. Then there was a change of conduct between pilots and cops so that they would no longer be on the hierarchy principles but would be teamwork, although EgyptAir 990 flight of 21 October 1999, which is unclear if it was collapsed or not deliberately, still hierarchical differences between pilots and copiers.
- 143 Air Canada flight of 23 July 1983. Ground maintenance personnel did not know that the kilogram system was being implemented at the expense of British pounds on the Boeing-767 because the plane was filled with fuel for only half the scheduled stroke and he stopped his engines in flight. Since then, special lessons have been done for ground mechanics to learn the differences between British pounds and other subdivisions.

- FedEx Express flight 705, April 7, 1994, with the Douglas DC-10 -30F cargo plane, when Auburn Calloway, a company employee, deliberately attempted to crash the plane. What had actually happened? Auburn Calloway was in danger of being fired as a result of his lies about flight times and the collapse had to bring an insurance policy for his family. The voice recorder (VCR) had been given by Auburn Calloway, in order for the crew to activate it again. The international aviation federation has been seriously questioned that the voice recorder no longer has an on-off connector.

-The DC-10 passenger flight had major structural problems with the cargo baggage before, when on 12 June 1972 the American Airlines 96 pilots with great difficulty brought back the ground plane. It was originally published by the flight investigation agency, major construction defects at the cargo track structure, and was not taken seriously until the Turkish Airlines 981 Turkish flight had the same defect and sacrificed the lives of 346 people.
- Boeing CT-43A IFO-21 type of United States Air Force on April 3, 1996 near Dubrovnik, Croatia. The machine involved Boeing CT-43A, a military version of the Boeing-737 civil apparatus, collapsed for several reasons; flight error by not correctly determining the airplane height, its unintentional collapse, and a flight instrument on board the aircraft that is faulty designed to approach an airport. The plane had no black box. From that moment on, on the occasion of this aviation incident, the black boxes were necessarily reintroduced to US military aircraft.
- also in 1996, it was the first time when experimenting with additional landing tracks of about 200 meters in addition to normal ones, brought an additional tribute to aircraft safety. On this occasion, attempts were made in the US with a Boeing-727 passenger aircraft on a track that had abrasive "bubbles" and by running the airplane above it, the wheels were sinking, increasing braking and stopping the aircraft in a timely manner. More than 50 such tracks have been made worldwide after approval.
- Air France 296 on 26 June 1988 with Airbus-320-111. The pilots of the plane had executed a low elevation as a flight demonstration of the new technology implemented at that time. It was the world's first fully fired plane with fly-by-wire technology. However, although the device was full of 136 passengers, it did not rise to its height in due time, hitting the trees and the nearby forest, so the device collapsed with the loss of three human lives. Conclusions from this accident crash into the head with pilot errors and failures in the fly-by-wire computerized system. It was only after 2000 that the software of this kind of aircraft was changed with new and more secure ones. It is assumed that the same types of malfunctions in the electrical wiring system also had the types of Airbus-310 aircraft.
- Flight 706 of the Proteus Airlines regional company dated July 30, 1998. The Beechcraft 1900D aircraft with 14 passengers aboard, following a passenger request to visit at low height the largest French sea builder ever built in the world , SS Norway, the pilots lowered unauthorized downhill by losing radar detection, and collided with another light Cessna Cardinal-177RG of a former French retiree pilot. All the people involved in the collision died. Since then, the flight committee has been banned from having anyone access to the pilots' cabin and interfering with them in any form during the flight.
- the tragic incident between 2937 Bashkirian Airlines and 611 DHL cargo on July 1, 2002. A Bashkirian Airlines Tu-154 collided with DHL's cargo of Boeing 757-23APF over the German-Swiss border, losing all 72 people on both planes. The collision was caused by ATC confusion (air traffic controller) and complicated by ambiguity in the operation of the TCAS (traffic collision avoidance system) on board aircraft. The situation became complicated for the flight controller following night-time maintenance with the confusion of the pilots if they were to listen to the flight controller or the instrument on board the collision avoidance planes. Since then, it has been internationally imposed that any pilot should listen to TCAS on board airplanes to the detriment of instructions given by air traffic controllers.

- Flight 3054 on 17 July 2007 with the TAM Brazilian Airbus A320-233, where 199 people lost their lives. Causes of crash. These planes had regular flights to Congonhas airport in Sao Paulo. But due to the short track, although work was done to stop the planes more efficiently, the pilots' complaints about effective stopping in the rain were not solved. Concurrently with this problem, on Airbus planes, the gas levers that commanded engine speeds had three main stages. Actuation of the gas levers was done separately on each engine, so the maximum speed was selected at the push, then manual pulling was the normal or dead power and one more step where the pilot pulled the levers to operate the jet reversers . Because several incidents of this kind occurred with stressed pilots that sometimes only operated a single lever for the dead end and then manually to operate the jet reversers, Airbus changed their mode of operation on all planes. Thus, if they fail to operate the gas levers at engine speed reduction, now with one lever, all the others are automatically connected to the normal mode, leaving only the pilot manually to actuate the jet reversers.
- Flight 17 of Malaysia Airlines with the Boeing-777-200ER aircraft type dated July 17, 2014. Following the takeover of this aircraft over Ukraine with a 9K37 "Buk" ground-to-air missile, the Civil Aviation Commission banned any flight over any territory involved in military conflict. In this aviation tragedy, 298 people died.
- Flight 9525 of Germanwings with Airbus 320-211 from March 24, 2015. The 150-person vehicle on board was deliberately crashed by the German co-driver Andreas Lubitz, who had psychiatric problems and had been treated before the incident. The child had locked himself in the pilots' cabin and hijacked the machine by spraying contact with the ground. The World Investigation Commission has initiated a program of access to pilots' cabins, with personal access cards to prevent deliberate foreclosure of the access door in the future.

Of course, there are many reasons why flight has become safer in the world. For example, on some occasions, as it was on April 10, 2010, when all the Polish staff and the president died in the accident near the Katin Forest, Smolensk. There were four reasons why the plane collapsed. It should be said that three black boxes were involved in eliminating any suspicion of this catastrophe. Two Russian and one encrypted in Poland. The Polish Polish QAR (Quick Access Recorder) was found only after a week and when they decrypted the data, they fit without any doubt with the Russian flight recorder. For the first time, the Russians collaborated to learn the truth about this incident. The first reason the Tu-154M plane collapsed and for which all the personnel died, was the bad weather, the stress of the Polish pilots who knew that if they refused to land at a certain airport, they would be replaced by other pilots. Then was the lack of a flight routing system in the airport equipment and a stress-less refusal of the Polish pilots to land at another airport equipped with equipment.
It also changed the way Pitot tubes were built on Airbus aircraft, in particular the collapse in the Atlantic Ocean of 447 Air France flight on June 1, 2009, which had taken off from Brazil to France. Because the Pitot tube had frozen and set flight parameters, especially the actual height of the flight, it was one of the main reasons the plane crashed with all 228 people aboard.

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