How unusual is it for a plane to land upside down with all passengers surviving?

It's almost unheard of for a commercial aircraft to land upside down with landing gear in the air and have everyone survive. Professor Ella Atkins describes this Delta flight incident as remarkable and extremely unusual for commercial transport aircraft to experience such an accident during landing. Despite this extraordinary event, Professor Atkins emphasizes that flying remains safe today. She reassures the public that no one should hesitate to go to the airport and catch their next flight, highlighting that such incidents are exceptionally rare in commercial aviation.