Remove Destruction-Parts around a crashed Heli?

[Grafzahl 1]

I have a AI Heli that crashes somewhere around the map, after the crash should spawn loot around the Wreck...

My Problem is that Arma spawns these earthern crates and destructions around a crashed chopper... the loot spawns under these crates and so its hard/not accessable. It would be possible to spawn the wreck together with the loot some meters around the actual wreck, but this wouldnt look realistic if you see the chopper crash, and cause its random, i dont know if there is a building or a tree near the crashsite.

So is there a classname or something for these parts that are spawning by BIS_Effects_AirDestruction and BIS_Effects_AirDestructionStage2? Or could i somehow clean the area of the crashsite of any "vehicles", trees and so on?