Crash investigators fault 737 Max’s design and approval process

“We are following the safety recommendations of the regulators and are taking measures to improve the safety of the 737 Max to prevent the flight control conditions that occur in this accident from ever occurring again,” Dennis Muilenburg, President and CEO of Boeing, said in a statement Answer to the report. “Safety is a lasting value for everyone at Boeing, and the safety of the flying public, our customers and the crew on board our aircraft is always our top priority.”

Officials of the Indonesian Transport Authority said that nine different factors could have contributed to the crash. “If one of them did not occur that day, the accident may not have happened,” investigator Nurcahyo Utomo of the Indonesian National Transportation Safety Committee said.

That started with the “maneuvering system” (MCAS), according to the team. The biggest problem was that a single Angle of Attack (AoA) sensor was used, making the entire system vulnerable to a component. There was a false ad in the crash of Lion Air that mistakenly caused the MCAS system to press its nose down. This was aggravated by the fact that the system was not reset and pushed the nose further down.

Following the safety recommendations of the KNKT, we take measures to improve the safety of the 737 MAX to prevent the flight control conditions associated with this accident from ever occurring again. Safety is a permanent value for everyone at Boeing and the safety of the flying public, our customers and the crew on board our aircraft is always our top priority. We value our longstanding partnership with Lion Air and look forward to working together in the future.

The pilots were not properly trained on the system, so they did not know how to override it. Also, the problem had previously occurred in the same jet, so it should be grounded. The officers, however, concluded that there was inefficient coordination between the flight crews.

Investigators demanded better supervision by the Federal Aviation Administration (FAA) and suggested how both Boeing and Lion Air could improve their systems. Instead of finding bugs, the team said it wanted to improve safety and suggested that the parties “take immediate corrective action to ensure that an accident like this never happens again.”

For his part, Boeing explained how the 737 Max should become safer. The MCAS compares the information from two AoA sensors, not just one, and only activates them if they match. In addition, MCAS is not deployed multiple times, but only once, and not with such a force that pilots can not override it with the control column.

The FAA also made a statement on the accident report. “We will carefully review these and all other recommendations as we continue to review the proposed changes to the Boeing 737 MAX, and the FAA seeks to ensure that the lessons are drawn from the losses of Lion Air Flight 610 and Ethiopian Airlines Flight 302 The FAA continues to review Boeing’s proposed changes to the 737 MAX, as we have already promised, the aircraft will not be returned to service until the FAA determines it is safe. ”

Boeing has been under pressure from the Congress, the Department of Justice and the families of the victims, especially in light of recent findings that may have misled the regulators into the performance of MCAS anti-stall technology. There is currently no news as to when the 737 Max could fly again.