Can someone explain please. If the MCAS system is necessary for the MAX to be certified, when the system becomes faulty / has to be turned off by the pilot, why is the plane permitted to continue to fly? Shouldn’t it require an emergency diversion to the nearest safe airfield. If MCAS is a necessary safety system shouldn’t pilots have been fully trained on its use before being passed to fly the type? Suppose a pilot on a previous leg had had trouble with MCAS and turned it off, would they have been permitted to take off on the next leg with MCAS still disabled and if so is the plane still certified safe to fly?
The role of this system seems to be very vague, is it a safety critical system or an attempt to assist overworked pilots?