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A system that overridespilot control for “better” safety
Automatically pushes nose down ? That uh might be a bad idea at low altitude. Think of this as ppt in reverse.
So, something as simple as an airspeed sensor (pitot tube clog) or GPS generated airspeed as redundancy, coupled with a nose up attitude make the computer think the jet is stalling and forces the nose down. I doubt the small trim tab surface can overcome the huge elevator surface. You'd have to have full manual control over the electro-hydraulic control system to pull out. They probably aren't rated to fly inverted even if you were 5,000 feet, so you couldn't roll inverted to give you more time.