The Ethiopian plane, which crashed just six minutes after the start of Addis Ababa, followed a similar flight pattern to a Lion Air flight that crashed in the Indonesian Java Sea, killing all 189 passengers and crew in October. The pilots of both aircraft apparently had problems gaining control of the aircraft after an automated flight control system called MCAS pushed down the nose of the nozzles to prevent the nozzles from stalling.
"The crew carried out all operations repeatedly The manufacturer could not control the aircraft," said Ethiopian Transport Minister Dagmawit Moges on Thursday at a press conference in front of the reporters.
Investigators found that the Ethiopian flight pilots had turned off the anti-stall system and turned it back on to regain control of the plane and have doubts about Boeing and the Federal Aviation Administration's allegations that the crash may have occurred had been avoided, the pilots would have only followed the applicable safety rules.
Moges did not specifically charge the MCAS software. However, she said it needed to be checked before the planes that had landed since mid-March were allowed to fly again.
"Recalling non-commanded aircraft nose-down conditions … it is recommended that the aircraft control system be reviewed by the manufacturer," said Dagmawit. She also suggested that the aviation authority ensure that the Boeing's flight control system is checked by Boeing before the jets are allowed to fly again.
Boeing and the Federal Aviation Administration had previously tried to lay down the responsibility for the pilots.
Muilenberg The pilots say that improper activation of the MCAS function, as was the case with the Ethiopian crash, "can contribute to a high-workload environment."
"It is our responsibility to eliminate this risk, we own it and we know how," Muilenburg said.
Muilenburg also said, "We are deeply saddened by the pain that these accidents have caused worldwide."
The Company has a "comprehensive" and "disciplined" approach to getting the software update right. Boeing expects its certification and implementation "in the coming weeks". Muilenburg said Boeing was confident in the basic security of the 737 Max, which has been grounded since mid-March.
"When the MAX returns to the sky with the software changes to the MCAS function, it will be among the safest aircraft," he said. "
Muilenburg tweeted the video here: [1
The Boeing share closed on Thursday at around 3 percent.
WATCH: Ethiopian pilots reportedly following the procedures in the crash of the Boeing 737 Max