Originally Posted by
aluminumdriver
If we actually end up in a windshear, the Enhanced GPWS system takes over and gives us max power and highest aircraft performance perameters to escape the windshear, basically keeping the jet right on the edge of stall as it max performs for the most lift possible. We do this training every year in our simulator training.
And just to clarify slightly on aluminumdriver's great explanation: the enhanced GPWS system is actually a terrain avoidance database, it doesn't detect windshear - there is another system for that. And if it sounds, it gives us guidance for flying out of the windshear, but the throttles are manually advanced and the profile is hand flown. Depending on the severity of the windshear and where it occurs, this can be one of the more challenging things we do in the simulator every year.