I was idly watching the plane next to mine while waiting at the gate. Apparently a baggage handler inside the plane was having a bad day. A lot of bags were making the 8 or 9 foot fall from the top of the baggage escalator onto the pavement. This went on the whole time they were loading the plane - every few minutes someone would notice and put the bags back on the conveyor, but more kept falling off. SO - when packing your bass to be checked luggage, anticipate that it's going to fall 9 feet onto concrete.