DON'T DO IT!!! I know people that had there baggage show up with no detector. Also, the Airline is not responsible for ANY electronics packed in luggage if damage, or if your bag goes missing. They will only cover cloths and toiletries. Also, get insurance on your detector. I have a "Sports Equipment" policy on mine that protects it from theft or damage.
I travel all over and take my MD as a carry on. I check my luggage with my digger and screw driver in it.
-Mark