What do you do after a crash to your reciever?
Check it and see if it still works. Then do a range check. After this, Place it on a dremel vibrating saw ( while on and connected to a servo) to make sure there are no vibration problems caused by the crash. Then install in an old plane and fly ( before putting in your new pride and joy) If all of this checks Ok, then you will not have any problems flying it!