Flight path of a plane that took off from Damascus shorty after news broke that Assad left the city towards unknown destination, which might have been Latakia on Syrian coast which is still under SAA control as of now. Terrain in place where flightradar stopped tracking that plane isn’t especially suited for emergency landing
Shortly after crash Syrian Army Command informs officers about fall of the regime https://xcancel.com/Alhadath_Brk/status/1865587913817305454#m
update: it’s not spoofed transponder data or controlled landing, locals reported plane crash in the area. rumors so far, but dawn will break soon in Syria and we’ll know https://xcancel.com/Schizointel/status/1865593800678130081#m
clarification: there’s some chance that Assad went out of Damascus before on other, private jet, so it’s not sure and it’s all conjecture on unproven information
update 2: there’s a claim by Russian media that Assad is in Moscow, so he would have to flee on some earlier plane, but no photos as of now. Still, looked mildly credible at the time
BBC article mentioning this flight. A tweet from FR24 says that the aircraft “was old with an older transponder generation, so some data might be bad or missing”, that it was “flying in an area of GPS jamming, so some data might be bad”, and that there was not aware of any airports in the area where the signal was lost.