Boeing has acknowledged it had to correct flaws in its 737 MAX flight simulator software used to train pilots, after two deadly crashes involving the aircraft that killed 346 people within six months.
The US-based aerospace company said its simulators were incapable of replicating certain flight conditions that contributed to the Ethiopian Airlines crash in March, or the Lion Air accident off Indonesia last October.
“Boeing has made corrections to the 737 MAX simulator software and has provided additional information to device operators to ensure that the simulator experience is representative across different flight conditions,” Boeing said in a statement on Saturday.
The company did not indicate when it first became aware of the problem, and whether it informed regulators.
Its statement marked the first time Boeing admitted there was a design flaw in software linked to the 737 MAX, whose MCAS anti-stall software has been blamed in large part for the Ethiopian Airlines tragedy.
The 737 MAX was grounded around the world in March following the Ethiopian Airlines crash that killed all 157 on board just five months after a similar crash of a Lion Air flight of a 737 MAX killed 189 people.
The company said the latest “changes will improve the simulation of force loads on the manual trim wheel,” a rarely used manual wheel to control the plane’s angle.
“Boeing is working closely with the device manufacturers and regulators on these changes and improvements, and to ensure that customer training is not disrupted,” it added.
Southwest Airlines, a major 737 MAX customer with 34 of the aircraft in its fleet, said it expected to receive the first simulator “late this year”.
American Airlines, which has 24 of the aircraft, said it had ordered a 737 MAX simulator that will be delivered and put into operation in December.
“As a result of the continuing investigation into both aircraft accidents, we are looking at the potential for additional training opportunities in coordination with the FAA (Federal Aviation Administration) and Allied Pilots Association,” it added. – AP
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