The crash of the Boeing 737 Max in Indonesia has led a chain of events investigators

К катастрофе Boeing 737 Max в Индонезии привела целая цепь событий - следователи

Previously, the Indonesian investigators cited the main reasons for the crash of Lion Air with technical and structural shortcomings.

The crash of an airplane of the airline Lion Air in Indonesia has led a series of malfunctions, mistakes and violations by the manufacturer and the carrier and its pilots.

To such conclusion the Indonesian investigators, transmits Bi-Bi-si.

“We know about the nine factors that contributed to this disaster – said at a press conference in Jakarta, the representative of the investigative group of Nurcahyo of Utomo. – Don’t be one of these nine factors, perhaps the disaster would not have happened.”

The airliner, which crashed, had to remove from flying due to previously identified faults, the document says. However, because the presence of a fault has not been properly documented, its equipment is not removed and the plane was allowed to fly. According to the report, the maintenance log of the aircraft was missing 31 pages.

In addition, technical service is not checked an important gauge of an angle of attack that was previously bought in a repair shop in Florida. This sensor passed information to the onboard system improve the performance of maneuvering (MCAS). The developer has installed this system on the Boeing 737 Max, to prevent withdrawal of the aircraft at supercritical angles of attack with the subsequent stall.

But in both cases – as in Indonesia and in Ethiopia, the collapse was preceded by inadequate work MCAS: the system persistently translated the plane into a dive as the pilots failed to recognize the situation and tried unsuccessfully to prevent a collision with the ground.

Indonesian investigators have confirmed the existence of a problem on-Board: she was vulnerable, focusing on the testimony of only one faulty sensor. The responsibility for this, in their opinion, the responsibility of the Boeing company and U.S. regulators who underestimated the risks. “The development and certification of the MCAS were not taken into account the probability of loss of aircraft control”, – the report says.

According to investigators, the crew had the wrong idea about the system, that was revealed during a training flight: “the flight manual of the aircraft and to the program of pilot training did not include the information about the MCAS”.

Investigators found other shortcomings in the training of the crew of the crashed Boeing. So, the second pilot, which proved to be bad at learning, was in the list of the necessary actions he had to know by heart.

He piloted the airliner before he went into a fatal dive. And the commander of the aircraft before passing control to the partner, not really instructed him – and this at a time when the crew barely kept the plane in the air.

Previously, the Indonesian investigators cited the main reasons for the crash of Lion Air with technical and structural shortcomings.

In the report, the Indonesian authorities have outlined some recommendations for Boeing. Among them – the recommendation to alter the MCAS and enter the relevant information in the flight manual and training courses.

In a statement, Boeing says the company is considering the recommendations of the National Committee for transportation safety Indonesia.

On Tuesday resigned Kevin McAllister, the Executive Director of Boeing Commercial Airplanes, one of the leading divisions of the Corporation. This is the first such resignation in large aircraft company after two high-profile accidents Boeing 737 Max.

In early October, Dennis Muilenburg was deprived of the status of the Chairman of the Board of Directors of Boeing, but he remains chief Executive officer of the Corporation.

Lion Air said that taking measures for improving the safety of the Boeing 737 Max. The airline representative said that the disaster was “an unthinkable tragedy” and the need for urgent changes so that such an accident will never happen again.

Five months later, under similar circumstances, another crashed Boeing 737 Max – in Ethiopia, after which the operation of aircraft of this model were suspended worldwide. Investigation of accident in Ethiopia is not yet complete; the report on the crash in Indonesia was published on October 25, he took 353 pages.