Wheee!! I'm a pony!!
Cessna 560x Citation
That was the flaps riddled with high velocity turbine blades. Common.
The jet engines can come apart like bombs.
Miniature knife blades in every direction.
Still, nice catch.
Not really random.
Pure centrifugal. Straight out from center.
Google 560x Citation pics and look how close the engines are to the main flaps.