You would like to think that after each flight a plane is fully serviced and give a 2000 point inspection...but really it is more like 25 minutes and that is mainly unloading people from the last flight and loading the new people and their luggage for both. Then refuel and a quick one over. Keep in mind how old some of these planes are getting to be and how much they are used. I am not super surprised that many has happened in a short time but still some what surprised.