1997-10-11: Piper PA-18-150 — Williston, ND

Casualties unknown • Williston, ND, US

Probable cause

the pilot's inadequate preflight planning/preparation, and his selection of an unsuitable area for landing. The adverse weather condition (low ceiling) and submerged object were related factors.

— NTSB Determination

Accident narrative

The pilot decided to land before reaching his original destination due to deteriorating weather conditions. During a landing on the Missouri River, the airplane's floats contacted an unknown object in the water. The airplane subsequently rolled over and sank in the river. The pilot reported he did not obtain a weather briefing before the flight.

Frequently asked questions

What happened in the 1997-10-11 Piper PA-18-150 accident near Williston, ND?

The pilot decided to land before reaching his original destination due to deteriorating weather conditions. During a landing on the Missouri River, the airplane's floats contacted an unknown object in the water. The airplane subsequently rolled over and sank in the river. The pilot reported he did not obtain a…

What aircraft was involved and where did it happen?

The accident on 1997-10-11 involved a Piper PA-18-150, registration N9691P, at Williston, ND.

What was the probable cause of the accident?

the pilot's inadequate preflight planning/preparation, and his selection of an unsuitable area for landing. The adverse weather condition (low ceiling) and submerged object were related factors.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001208X08975. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.

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