Errors in geography
There's no way anyone could know within moments of an explosion what happened. Especially since the plane had been hijacked, Homeland Security, the NTSB, and ATF would all have done thorough investigations of the cause of the explosion, and these investigations would likely take weeks, if not months.
It's simply unthinkable that anyone in the world of this show, in which the US Capitol has been bombed and the vice president assassinated, would simply believe right away that an exploding hijacked plane was a simple accident.
It's unlikely this small an explosion could cause the ignition of jet fuel, but if jet fuel did ignite, the wings would have blown up as well, as they are where most of a plane's fuel is stored. Moreover, the size of the explosions would have visibly damaged most of the plane, yet the front of the plane is completely undamaged while large explosions occur toward the rear.
In short, the explosions pictured are completely wrong for what supposedly occurred.