Thanks for answer FlightDetent.
I was aware of hydraulic system and flight controls architecture but i wasn’t sure about the superority of green system in terms of dual hydraulic failure. Thanks again for detailed explanation.
Speaking of hydraulic system i have one more question.
Say we have dual hydraulic failure and what a bad luck aircraft gets into mechanical backup. If we have only green or yellow system after dual hydraulic failure, we can fly the aircraft by using rudder and THS but if we have only blue system after dual hydraulic failure, we can’t fly the aircraft in mechanical backup because blue system can’t control THS.
Why doesn’t blue system have connection to THS? Getting into mechanical backup with blue hydraulic system maybe has very very low probability but not impossible. Why did Airbus decide such a flight controls architecture? Is there an explanation?