Originally Posted by robert waldo

Aircraft - Beechcraft D-18S. RC airplane - Alpha 60 ARF. B-18 was at 50 feet conducting a go - around at about 120 knots when it met head on with the rc aircraft. The rc impacted the propeller blade and entered the front of the 985 P&W destroying several pushrods resulting in a partial power loss and massive oil loss. The engine was immediately feathered and the airplane successfully landed. Damage was over 33,000 dollars. A 10 pound airplane could easily cause a airplane to crash. Any engine damage to oil, fuel and other exposed engine components will likely result in a fire and powerplant failure. A cockpit hit would be devastating. Any damage to the primary control system would be lethal. Wouldn't matter if it was a rc helicopter, drone or quad.