I don't think it's the nav equipment that is the issue on this specific incident..
The aircraft they were using here is a slower flying close air support craft. The Russians are well aware of the landmarks and this particular projection of Turkish land that sticks out like a isthmus.
They have been ignoring it since they started their campaign and were warned off many times..
There is a second issue and that is the targets they were pounding again on that day.
The Target was the "Turkmen". I say that because that is the area the Turkmen call home, and the Turkmen are closely aligned with the Turkish. So in effect, bombing them is akin to bombing Turkey and the Russians are fully aware of this. Yet they are a long way toward destroying the Turkmen for reasons I can only speculate upon since the US coalition has not been firing on them and in fact has been supplying them.
Add the two issues together and you will understand why the order to fire on the Russian planes was given.
If anything, maybe it will lead to what is called a "understanding".
They are Turkmen in Syria, not Turkey. They are rebels fighting the Syrian government. Turkey can’t have it both ways, in but not in the war.
Our Air Force General says he would never have shot down the plane. Israel says same. I say level heads like those are the ones I believe.