The plane was in Turkey's airspace for 15 seconds.

Aircraft are usually granted a leeway of about a mile or so into another nation's airspace before they are escorted out by the country's jets, solely because of the speed aircraft travel at.

It seems as if Turkey hastily reacted because the pilot was doing something they didn't particularly like, such as bombing their sponsored terrorist group(the turkmen brigade) and the oil trucks

It's very well known that Turkey's PM is in league with ISIS. Erdogan's daughter owns a hospital that has been claimed to solely treat ISIS fighters, and his son owns a transport company that has provided them with vehicles and other such aid, which is why they have a shitload of brand new toyotas. The turks do not want a kurdish state to form, so they will back ISIS.

What will likely happen now is the Kurds will receive a tremendous amount of material and aerial assistance from the Russians.