NTSB Identification: CEN12LA539
14 CFR Part 91: General Aviation
Accident occurred Saturday, August 11, 2012 in Burlington, WI
Probable Cause Approval Date: 08/13/2013
Aircraft: GN-1 AIRCAMPER MATHES, registration: N31TM
Injuries: 2 Minor.

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 pilot departed on a local flight during which the airplane experienced an in-flight separation of the propeller. The pilot then performed a forced landing to a field that resulted in substantial damage to the fuselage. Postaccident examination of the airplane revealed that the pilot installed the propeller bolts backwards. The bolts were also found to be improperly torqued.

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

The pilot's improper installation of the propeller bolts, which resulted in the in-flight separation of the propeller.

Full narrative available

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