I've been behind the scenes at an airport baggage handling conveyor system and seen what happens.
If you are comfortable taking the instrument and case and throwing it into a cement block wall as hard as you can from a distance of about 10'....go for it.
What he said.
True story: in 1994 my band flew from Boston MA to Houston TX for an extremely prestigious but equally-extremely low funded jazz festival. (I guess that's redundant, saying "jazz" and "low funded" in the same sentence. But I digress...) In order to save $$$ we decided to ship some gear ahead of time via Commercial Air Freight rather than have it accompany us on our flights.
So I take my Modulus Quantum-6 SPX bass (in its flight case) down to the Commercial Air Freight hub, and they place it on a palette, and a guy drives up in a forklift, slides the blades under the palette, and instantly lifts it as high off the ground as the lift will go. And I do mean instantly...such that my bass (in its flight case), now a textbook example of Newton's Law ("an object in motion remains in motion...") continues skyward an additional 3 or 4 feet past where the forklift & palette stopped moving, until Newton's other Law (aka, gravity) finally exerts its inevitable control and my bass (in its flight case), from the apex of a 12' high arc, now proceeds to come crashing to the ground.
Can you imagine what would've happened if my bass hadn't been in a flight case?

