At 100-150 Ft Above Ground Level, He Again Experienced A Partial Loss Of Engine Power

Location: Grimes, CA Accident Number: WPR20LA225
Date & Time: 07/17/2020, 1430 PDT Registration: N508CM
Aircraft: Vans RV 8 Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation – Personal

On July 17, 2020, about 1430 Pacific daylight time, an experimental RV-8 airplane, N508CM, was substantially damaged when it was involved in an accident near Grimes, California. The pilot was not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight.

The pilot stated he was conducting pattern work at a private field in preparation for a mountain flying school, when he experienced a partial loss of engine power. He landed the airplane in the field which was then examined by a certified Airframe and Powerplant mechanic. The engine was run at 2,000 rpm with no misfire, the manifold pressure indicated 29-30 inches of mercury and the fuel flow indicated 20 gallons per hour flow (with or without fuel pump). After the mechanic cleared the airplane for flight, the pilot took off, but at 100-150 ft above ground level, he again experienced a partial loss of engine power. The pilot initiated another emergency landing but the airplane impacted the ground resulting in a substantial damage to the fuselage.