> unless the automated (turbulence?) avoidance system engaged There is no such thing. Civilian airliners don't have any automatic avoidance systems - they can

> unless the automated (turbulence?) avoidance system engaged There is no such thing. Civilian airliners don't have any automatic avoidance systems - they can only notify the pilots when there's a windshear (drastic wind change), another plane very close by, terrain close by, etc. But it's only (very strong) warnings, and it's impossible to detect/predict turbulence.