Survived pilot is telling that it was no warnings from Turkey. He plans to return to Siria and to revenge for his fallen comrade.
News a Russian only right now
http://ria.ru/world/20151125/1328256773.html,
He also tells that Turkish airspace wasn't violated 'even for a second'. Now its easier to understand why one pilot was shot and this one was hunted by turkish terrorists until syrian spetsnas find him.