I would feel guilty if I DIDN'T pay for a plane that I shot down,even if it was an accident and forgot to ask what frequencys are being used!
I figure it's just like backing into a car in a parking lot and doing damage to the other car and just taking off not leaving a note to offer to pay,whether it be a clunker I owe 100.00 to fix or a corvette that did 5000.00 in damage,you caused the accident YOU pay!
You just learn to be more careful and SORRY is used WAY to loosely in this society and doesn't make things right!
Just my 2 cents.