Amateur-built LONGEZ N29TM accident near Genoa Township, Michigan

Probable cause

A total loss of engine power for undetermined reasons.

NTSB analysis

The pilot reported that, while climbing to cruise altitude after takeoff, the engine suddenly lost total power. He attempted to restart the engine, but was unsuccessful, and subsequently conducted a forced landing into a pond. While maneuvering, the airplane impacted a tree, resulting in substantial damage to both wings and the fuselage.

Examination of the engine revealed no evidence of any mechanical malfunctions or failures that would have precluded normal operation. The magnetos had evidence of exposure to high temperature; however, both magnetos functioned when bench tested. Blast tubes for magneto cooling were installed, but the effectiveness of the blast tubes could not be determined. The reason for the loss of engine power could not be determined.

Text from the NTSB. Open the NTSB docket for CEN23LA371 for the full record.