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Series of failures caused Boeing 737 Max Lion Air crash – KNKT investigators report

A Lion Air 737 MAX stream collided with the Java Sea not long after take-off from Jakarta on Oct. 29, 2018, killing all 189 people on board. The 737 MAX was grounded overall after a second destructive accident in Ethiopia in March 2019.

The groups of casualties of the main accident will be informed before the report into the loss of Lion Air flight 610 is made open, Indonesian National Transportation Safety Commission (KNKT) press official Anggo Anurogo told correspondents on Monday.

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A starter report into the Lion Air mishap discharged keep going November concentrated on carrier upkeep and preparing and the reaction of a Boeing against the anti-stall system to an as of late supplanted sensor however didn’t give a reason for the accident.

The last mishap report discharged Friday said Lion Air flight 610, from Indonesia’s capital Jakarta to the island of Sumatra, slammed on the grounds that the pilots were never advised how to rapidly react to glitches of the Boeing 737 Max 8 fly’s autopilot flight-control system.

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Highlights from the Report :

Fault Reporting Manual (FRM) The Boeing Company provides Fault Reporting Manual (FRM) and the Interactive Fault Isolation Manual (IFIM) which together provides a structured method for the aircraft operator to report and correct faults in aircraft systems. The manuals are linked by a unique 8-digit fault code for each fault. The FRM is primarily for the flight crews and the cabin crews and contains three alphabetical lists of faults, with a fault code for each fault. While the IFIM is for the maintenance crews which gives a fault isolation procedure for each of the faults.

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Boeing 737-8 (MAX) Fault Handling System The Boeing 737-8 (MAX) is equipped with the Maintenance Awareness System (MAS) that provides the information directly related to airworthiness and system information. The system includes the MAINT light (amber color) on the overhead panel, stored fault information which can be accessed from the Multi-Function Display (MFD) control on the pedestal.

The Angle of Attack failure According to the Boeing 737-8 (MAX) Illustrated Part Catalogue (IPC), the installed Angle of Attack sensor part number is 0861FL1. Refer to the Fault Reporting Manual (FRM) the fault related to the AOA categorized as Observed Fault with the fault codes

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Log Error: Lion Air pilots who experienced problems on a previous flight failed to properly note it in the plane’s log, so maintenance crews couldn’t make necessary repairs. Pilots on the fatal flight failed to perform the correct emergency procedure for a nose-down pitch of the plane. The co-pilot failed to understand the situation and was preoccupied with running the wrong emergency checklist.

Less time for a response : Boeing also made incorrect assumptions about how quickly pilots could respond to a malfunction and didn’t inform pilots of the existence of MCAS until after the Lion Air crash, making it harder for Lion Air’s pilots to save the plane and its passengers

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For more detail download Full report here

FAA Statement on Lion Air Flight 610 Accident Report

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The FAA’s first priority is always safety. The Indonesian National Transportation Safety Committee’s accident report on Lion Air Flight 610 is a sober reminder to us of the importance of that mission, and we again express our deepest condolences to the families and loved ones of those who were lost in that tragic accident.

We welcome the recommendations from this report and will carefully consider these and all other recommendations as we continue our review of the proposed changes to the Boeing 737 MAX. The FAA is committed to ensuring that the lessons learned from the losses of Lion Air Flight 610 and Ethiopian Airlines Flight 302 will result in an even greater level of safety globally. 

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The FAA continues to review Boeing’s proposed changes to the 737 MAX. As we have previously stated, the aircraft will return to service only after the FAA determines it is safe.

Boeing Statement on Lion Air Flight 610 Investigation Final Report

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“On behalf of everyone at Boeing, I want to convey our heartfelt condolences to the families and loved ones of those who lost their lives in these accidents. We mourn with Lion Air, and we would like to express our deepest sympathies to the Lion Air family,” said Boeing President & CEO Dennis Muilenburg. “These tragic events have deeply affected us all and we will always remember what happened.”

“We commend Indonesia’s National Transportation Safety Committee for its extensive efforts to determine the facts of this accident, the contributing factors to its cause and recommendations aimed toward our common goal that this never happens again.”

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He is an aviation journalist and the founder of Jetline Marvel. Dawal gained a comprehensive understanding of the commercial aviation industry.  He has worked in a range of roles for more than 9 years in the aviation and aerospace industry. He has written more than 1700 articles in the aerospace industry. When he was 19 years old, he received a national award for his general innovations and holds the patent. He completed two postgraduate degrees simultaneously, one in Aerospace and the other in Management. Additionally, he authored nearly six textbooks on aviation and aerospace tailored for students in various educational institutions. jetlinem4(at)gmail.com

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