Well, jokes aside, even if it's theoretically possible and if it's been done during the war, it should be extremely difficult: notice how the German tanker says «My gunner [...] can take credit for a deed which was probably unparalleled on the Eastern Front [...] Of course, he was also helped by chance.»
In Aces High it happens too often, and flying close to the ground doesn't have anything to do with that, a fast airplane it's a fast moving target, it's not easy to kill it, especially with a tank main gun (it's different for bombers making bombing runs low and in a straight course, as I saw in AH, but, knowing Silat, he was probably flying a 38). Even a fighter accelerating on a runway shouldn't be an easy target, in real life, even if you put the tank in line with it's path.