I really would like a way to remove things like that. I've got dead bodies all over the Castle and Sanctuary that are just laying there for days now.
I see them crashing all the time, all over the map. I`m actually amazed if I see one staying in the sky for more than 5 minutes.
The collision detection is very ropey - seen them hit Pylons and explode and one I travelled in actually flew through the middle of a concrete skyway.
Yeah they make epic explosions
its not a crash site, Vertibird pilots dont know when to leave a hot zone and get shot down.
Deactivate unwanted stuff with console.
Open Console -> Click on unwanted item/npc -> type: "deactivate" -> hit enter
I think this should work with the Vetibird too.