When I was a flight attendant (FA) we were trained and constantly tested on what we would do in case of an emergency like the July 6th Asiana crash landing in San Francisco. One of the things we learned in training is that majority of accidents happen during take-off (20%) and landing (36%). The drop in the sky phenomena is statistically 8% a rarity although the thought of it is horrifying. (Data source: www.planecrashinfo.com)