Accident Overview
On December 8, 2019, at about 1515 central standard time, an experimental, amateur-built Zenith Zodiac CH-650, registration N914AR, was substantially damaged in an accident near Willow Springs, Missouri. The private pilot, who was the sole occupant, sustained minor injuries. The flight was conducted as a personal flight under Title 14 Code of Federal Regulations Part 91.
Pilot Account
According to the pilot, he had adjusted the ground adjustable propeller and intended to perform a test flight. During the initial climb, the engine lost total power. A few seconds later, the engine restarted on its own but then lost total power again shortly thereafter. The pilot turned back toward the runway but realized he would not make it and set up for an off-field landing. The pilot did not recall additional events leading up to the accident.
Examination Findings
A Certified Airframe and Powerplant mechanic examined the airplane and found several fuel system issues. The fuel pump was weak on pressure and its diaphragm was leaking. The electric fuel pump had been installed between the engine-driven pump and the carburetor, which resulted in low fuel pressure. Additionally, the fuel flow meter was not installed correctly using the proper fittings; it had been installed using a pipe fitting connected to a flare fitting. All fittings were found to be only finger tight.