Boeing Co plans more modifications to the software architecture of the 737 MAX flight-control system to address a flaw identified after a test in June, two people briefed on the matter stated late on Thursday.
The redesign, first reported by the Seattle Times, involves using and receiving enter from each flight control computers relatively than one.
The move comes in reply to an effort to address a problem found in June during a Federal Aviation Administration(FAA) simulator test.
This is on high of earlier announced changes to take enter from each angle-of-attack sensors within the MCAS anti-stall system connected to two lethal crashes that led to a global grounding of the plane.
Boeing still wishes to finish the software redesign by the tip of September to submit to the FAA for approval, the sources stated.
For decades, 737 models have used solely one of the flight control computers for every flight, with the system switching to the other equipment on the next plane, under individuals familiar with the plane’s design.
The FAA stated in June that it had identified a new risk that might be addressed before the airplane could be ungrounded.
Under a scenario the place of a specific fault in a microprocessor induced an uncommanded motion of the plane’s horizontal tail, it took pilots too long to recognize a loss of control known as runaway stabilizer, a Boeing official said on time.
Boeing Chief Executive Dennis Muilenburg told analysts last month that he was convinced the 737 MAX could be again in service as early as October after a certification flight in “the September time frame.”
Southwest Airlines and Air Canada, however, have taken the 737 MAX off their schedules till January.