Question about airstrikes

[John Given]

I notice that when airstrikes hit, it's always from the same direction for a particular side, in a scenario. (i.e. If a russian player's planes always come from the south, then ALL of his future airstrikes will also be from the south)

My question is, do planes ignore the armor facing of tanks? Or is this just a graphics issue?

In a scenario I'm playing, i'm advancing one direction, but the planes are atacking from another, hitting my tanks in the back armor. Turning my tanks to face incoming planes would leave them open to attacks from GROUND targets - it's a catch 22!!

Thanks in advance for any advice.