Originally Posted by
arf23
The commonalities between jeju and Air India are astounding, engine shutdown when totally not appropriate
I would suggest cockpits be added with a 2nd shutdown switch. That if an engine shutdown is commanded by the crew, and the computer disagrees it's necessary, that the crew need to push a 2nd, more guarded and inaccessible, switch to command the shutdown.
Have advances in engine control/management introduce unnecessary complications, eg this switch to turn the engine 'Off'?
My antique experiences of jet engine management were all back in the analogue computer days, but the vast majority relied on pulling the SSL (Speed Select lever) back past a mechanical lock to shut off or rolling the throttle back past a pilot operated mechanical lock to shut off. In all cases the lock occurred at ground idle.
So maybe something similar is not inconceivable in this digital age, incorporated into the Thrust Levers quadrant and removing the intriguing but IMO unnecessary switchology and computer processing of the Fuel Shut Off switch?