The Aircraft Accident Investigation Bureau of Ethiopia released the preliminary report on the crash Ethiopian Airlines flight 302, Boeing 737-8(MAX), ET-AVJ. The flight took off from Addis Ababa Bole Int. Airporten route for Nairobi, but the Angle of Attack sensor recorded value became erroneous. The crash resulted in 157 fatalities. The report is available here
Preliminary findings on ET 302 crash:
1. Aircraft’s airworthiness was certified;
2. The crew were capable of flying& followed Boeing’s procedures;
3. Take off appeared normal;
4. Crew followed all procedures, but was unable to control the aircraft.
The release of the actual preliminary report by Ethiopia’s Ministry of Transport is expected during Apr 4th or Apr 5th 2019.
We at Boeing are sorry for the lives lost in the recent 737 MAX accidents. These tragedies continue to weigh heavily on our hearts and minds, and we extend our sympathies to the loved ones of the passengers and crew on board Lion Air Flight 610 and Ethiopian Airlines Flight 302. All of us feel the immense gravity of these events across our company and recognize the devastation of the families and friends of the loved ones who perished.
The full details of what happened in the two accidents will be issued by the government authorities in the final reports, but, with the release of the preliminary report of the Ethiopian Airlines Flight 302 accident investigation, it’s apparent that in both flights the Maneuvering Characteristics Augmentation System, known as MCAS, activated in response to erroneous angle of attack information.
The history of our industry shows most accidents are caused by a chain of events. This again is the case here, and we know we can break one of those chain links in these two accidents. As pilots have told us, erroneous activation of the MCAS function can add to what is already a high workload environment. It’s our responsibility to eliminate this risk. We own it and we know how to do it.
From the days immediately following the Lion Air accident, we’ve had teams of our top engineers and technical experts working tirelessly in collaboration with the Federal Aviation Administration and our customers to finalize and implement a software update that will ensure accidents like that of Lion Air Flight 610 and Ethiopian Airlines Flight 302 never happen again.
We’re taking a comprehensive, disciplined approach, and taking the time, to get the software update right. We’re nearing completion and anticipate its certification and implementation on the 737 MAX fleet worldwide in the weeks ahead. We regret the impact the grounding has had on our airline customers and their passengers.
This update, along with the associated training and additional educational materials that pilots want in the wake of these accidents, will eliminate the possibility of unintended MCAS activation and prevent an MCAS-related accident from ever happening again.