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

It's almost unheard of for a commercial aircraft to land upside down with landing gear in the air and have all passengers survive. According to Virginia Tech Professor Ella Atkins, such an occurrence is extremely unusual and remarkable. The fact that everyone aboard the Delta flight at Toronto International Airport survived to tell their stories is extraordinary. Despite this rare incident, Professor Atkins emphasizes that commercial flying remains very safe. She stresses that no one should hesitate to travel by air, as accidents during landing for commercial transport aircraft are extremely uncommon, and this incident should not deter people from catching their next flight.