helicopter_chunk

This entity is not in the FGD by default.
It should not be put directly in a map.

Class hierarchy
CHelicopterChunk ↳CBaseAnimating ↳CBaseEntity
npc_attackchopper.cpp

helicopter_chunk is a model entity available in Half-Life 2 series. This is destroyed npc_helicopter debris entity. When helicopter is destroyed and crashes, 3 helicopter_chunk entities are created around helicopter's crash location along with random number of gibs. Helicopter debris act like physics objects and can be picked up with a gravity gun.