I don't normally check the score other than plane kills, so forgive me if this is an obvious answer
But.....
I have 4 sorties, of which 3 I landed, and 1 time I was killed. In those 4 sorties I have 14 kills (and 1 assist, not that it affects things).
The score page says my K:D is 7.00.
Huh???
Last I saw, 14:1 is a kill/death of 14.