Plane crash in philidelphia.

[Zaphod58]

It's really difficult to grab the exact frame, as there are many in the 7 second mark and not on a PC. Right before it goes beneath the Townhouses, you can see something tailing off of it. Could be smoke. This is the best one I could get. 

That’s the only video that shows anything of the sort. There are several videos taken right next to the impact site that didn’t appear to show anything wrong with the aircraft. There are also several videos from farther away that don’t appear to show anything like that. It’s most likely due to the camera.