As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, ENGINE SPUTTERED CAUSING THE PILOT TO MAKE EMERGENCY LANDING IN A COW PASTURE. INSPECTION REVEALED THAT THE ENGINE AIR INLET HOSE HAD COLLAPSED CAUSING A DECREASE IN AIR FLOW TO THE ENGINE. FURTHER INSPECTION REVEALED THAT THE INTERNAL WIRE SUPPORT COIL HAD DETACHED FROM THE HOSE. THIS ALLOWED THE HOSE TO COLLAPSE UNDER THE PRESSURE FROM THE SUCTION OF THE ENGINE.