Aviat A1 N29712 accident near Broadus, Montana

Probable cause

The pilot's failure to maintain clearance from the wires while flying at a low altitude resulting in a wire strike, a loss of airplane control, and the consequent impact with terrain.

NTSB analysis

According to the pilot, while flying at low altitude and following the course of a river, he did not see the telephone wires that spanned the width of the river. He recalled that while following the river's path, the airplane struck the wires, the airspeed decreased, and the wires "broke". He reported that during the moments while the airplane was in contact with the wires, the airspeed bled off to below stall airspeed, descended, and impacted the ground east of the river bank. The airplane sustained substantial damage to both wings, fuselage, horizontal stabilizer and elevator.

The pilot reported that there were no mechanical failures or anomalies prior to or during the flight that would have prevented normal flight operation.

Text from the NTSB. Open the NTSB docket for GAA16CA080 for the full record.