Referring to unnamed sources familiar with the investigation, WSJ reported that, despite the steps that included turning off the automated flight management system, pilots could not return control over the Boeing 737 MAX 8.
CNN did not confirm the details of the report.
The Ethiopian Airlines flight 302 crashed on March 10 after it departed from Addis Ababa on its way to Nairobi, Kenya, killing 1
The 610 Lion Air flight crashed into the Javanese Sea in Indonesia on October 29 after it departed from Jakarta. All 189 people aboard died.
If verified, the results presented in Wall Street Journal, suggest, the following extraordinary procedures in the Boeing Handbook may not be sufficient to prevent a collapse.
The incoming messages derive from the preliminary report required by the investigating authority and to be provided within 30 days of the incident. The findings are not final and may be changed as the investigation continues
MCAS is a system that automatically lowers the plane's nose when it receives information from its external attack angle sensors (AOAs) that the plane is flying too slowly or steeply and risks to stop.
The researchers pointed out whether pilots had sufficient training with the system.
GebreMariam also said that the flight simulator, which pilots learned to fly on the Boeing 737 Max 8, did not reproduce the automated MCAS function that researchers are investigating. – which one pilot told CNN what he took on his iPad – highlighted the differences between Max 8 and older 737, but did not explain MCAS's function.
"FAA expects to receive the final Boeing package from its software in the coming weeks for the FAA." – The agency said in a statement. "Time is required for Boeing's additional work as a result of the ongoing review of the air traffic control system 737 to ensure that Boeing has identified and duly dealt with all relevant issues."