from the details i have :
its sounds to be a duchess, the rego unknown, but the tail section is intact the tail had a brown stipe making on it but couldn't tell which flying organisation it was from. everything forward from the tail section look like a mangled wreck. im surprised the pilots survived the impact. the crash site is about 1/2 mile to the east of the airfield of the airport roughly in a 090-120 direction on top of the hill. At the crash site there was heavy machinery bits (old junk ) and stuff like that. scattered in the backyard.
Hope all are well .....