NTSB Identification: CEN12LA049
14 CFR Part 91: General Aviation
Accident occurred Saturday, October 29, 2011 in Vienna, OH
Probable Cause Approval Date: 06/12/2013
Aircraft: BROCHETTI LOUIS PIETENPOL AIRCAMPER, registration: N486LB
Injuries: 1 Serious.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The experimental amateur-built airplane impacted trees and terrain after a loss of engine power during takeoff. The pilot reported that the initial takeoff roll was normal and described the subsequent loss of power during the climb as gradual and continuing. Although postaccident examination of the airplane revealed that one of the engine's spark plug wire terminals was not attached to its respective spark plug, the pilot’s description of a gradual power loss during the climb was not consistent with a spark plug wire detachment, which would have resulted in a rapid loss of power. According to a Federal Aviation Administration carburetor icing chart, the temperature and dew point at the time of the accident were conducive to carburetor icing. The pilot attributed the loss of engine power to carburetor ice. Based on the available evidence, it is likely that the spark plug wire became dislodged from the spark plug during the impact sequence, and the loss of engine power was a result of carburetor icing.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

The loss of engine power during climb after takeoff due to carburetor icing.

Full narrative available

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