Boeing 737 series is one of the best-selling models in the world, and the first and second generation Boeing 737 are basically retired now. At present, the Boeing 737 used in many countries is the third generation, and the main models are Boeing 737-600, 737-700, 737-800 and 737-900. Since it was put into production in the 1990s, it has been running stably for twenty or thirty years, and the safety factor is quite high.
737MAX is actually the fourth generation Boeing 737, which is a new model developed 20 10 years later. Boeing 737 MAX models include 737 MAX 7, 737 MAX 8, 737 MAX 9 and 737max 10 * *.
The main design origin of this generation of aircraft is to replace the LEAP- 1B engine with a larger diameter. This kind of engine has greater thrust and higher fuel economy, which enables the aircraft to carry more passengers and fly farther. But this is probably the origin of this accident. The diameter of the engine is too large, which makes the upper surface of the wing stall easily at some angles of attack. Therefore, Boeing has specially developed a mobile stability augmentation system to solve this problem. Who knows that this system will cause the plane to enter a "death dive" when the angle of attack sensor fails.