Question: A plane consistently missing the drop zone by c. 2.5 km/1.5 miles

[Jorma]

I gave the plane orders to start to drop the paratroopers immediately upon entering the map. This means the coordinates 1,75. However, the plane consistently aims to drop the soldiers around hexes 52,x to 55,x. Needless to say, this makes the whole drop fairly useless with the men missing the drop zone by 2 to 3 kilometers.

The attached files shows this possible 'issue'.

Is this how paradropping works in this game, that the planes miss the drop zones by one, two or maybe three kilometers? If so, I will just stop using this feature altogether.