Failure to guide pilots and defects in MCAS software design can be two mistakes that led to Boeing Airborne Accident.
Fragment of Ethiopian Airlines in the field. photo: AFP.
The Ethiopian plane crash on March 10 killed 157 people, and the AI tragedy in Indonesia at the end of October last year caused 189 deaths due to doubts in the 737 MAX 8. t Boeing aircraft when both aircraft had the same expression before the accident.
In the case of Ethiopian Airlines, only three minutes after the take-off, the aircraft shows signs of unusually low, speed above the safety margin and the pilot must request an emergency landing. In the case of Lion Aira, in the last 12 minutes of driving, the plane of the first wish fell by 20 times, and the captain must also request an emergency turn.
to follow AtlanticThe Boeing 737 MAX has a different control feature from the previous 737 models because its engine is more positioned on its lap and rises ahead. This change of position brings the aircraft to "get up" during the flight, which puts the plane in danger. The Flight Management Improvement System (MCAS) was supplemented by Boeing at 737 MAX to solve the situation by automatic airplane control to lower when the sensor detects a risk of failure.
The most widely accepted hypothesis about the plane crash Lion Air is a broken sensor that caused misinterpretation of the information and control of the aircraft in order to be continually dropped until it dropped into the sea despite attempts. pilot control. The issue after the accident is whether the Lion Air pilots can accurately transmit how MCAS works or how to turn off the system. Now with the Ethiopian plane crash, the same question again came up.
Wally Magathan, a former aviation pilot, Flight Instructor, said Boeing made two serious mistakes at 737 MAX. The first is that the MCAS system relies on only one sensor data from the angle sensor to provide the ability to auto-adjust without redundant sensors or comparative data. Second, Boeing did not train pilots to deal with the MCAS system when they believed it had a problem.
According to Magathan, with each inexperienced cargo manager, separating the MCAS system to regain control of the aircraft is a very simple and complete action in their ability to perform. "It's certainly easier to handle engine failure or loss of hydraulic system," he wrote.
However, when the plane suddenly wanted a nose and the pilot did not know the MCAS well and did not understand the reason, the pressure on them was great. When he spotted a series of warning lights and sounded the alarm sound, less experienced pilots easily fell into panic and panic. That's why training, piloting on new systems, and how to deal with the minimum situations aviation companies can do.
"For me, from a pilot point of view, we do not have to forbid flying the entire 737 MAX fleet, but just do not let all pilots control this aircraft until they are trained." , a complete MCAS guide, "shared by Magathan.
Until now, the 737 MAX 8 is forbidden to fly around the world, and Boeing, a renowned aircraft manufacturer for safety and reliability, will face huge losses. Boeing shares fell by 12% in a few days after the plane crash in Ethiopia, causing company capitalization to run more than $ 30 billion.
The 737 MAX production line still works, but the US group said it would stop supplying aircraft to passengers to investigate the outcome of the Ethiopian plane crash.