Murdered pilots everywhere
 

I hope this has not already been addressed elsewhere, I looked but could not find it.

Sometimes when I shoot down an enemy plane it says I murdered the pilot. I was wondering what this is all about. It it because they are already "shot down" but I continue to pump bullets into them? Just curious if this had any game-play effect other than making me feel guilty. Thanks!

Its just a poor translation.
Pilot killed would be a better term to use.
Although sneaking up behind some unsuspecting enemy,and in cold blood pumping him full of lead.
It does feel sometimes a bit like murder.