Low-Level Flight and Intoxication Lead to Residential Crash

Casualties unknown • Shiocton, WI, US

An aircraft flying at treetop level over residential areas collided with a utility pole and trees before crashing into a home, resulting in destruction of the plane and extensive property damage.

What happened

Prior to the accident, witnesses observed the aircraft operating at an extremely low altitude, maintaining proximity to treetop level while traversing over various residential neighborhoods, a baseball park, and a lake park. The flight path brought the aircraft dangerously close to ground-level obstacles in populated areas. Subsequently, the aircraft collided with a utility pole and surrounding trees. This initial impact caused the aircraft to crash into a private residence, where it burst into flames. The force of the collision and the subsequent fire completely destroyed the aircraft. The private residence sustained extensive damage from both the direct impact of the aircraft and the post-crash fire.

The investigation

Investigative findings revealed that witnesses reported the engine was operating normally prior to the accident, indicating no immediate mechanical failure initiated the event. A thorough examination of the aircraft found no preimpact mechanical problems during the investigation. However, toxicology reports provided critical context regarding the crew's condition. A check of the pilot's blood showed an alcohol level of 0.193%. The passenger had a blood/alcohol level of 0.116%. Additionally, the pilot's medical certificate was dated 7/22/83.

Findings

The primary factors contributing to this accident involved the decision to fly at an unsafe low altitude over residential areas and significant impairment due to alcohol consumption by both the pilot and the passenger. The pilot operated the aircraft while severely intoxicated, which likely impaired judgment and motor skills necessary for safe navigation near obstacles. The passenger was also under the influence of alcohol. The combination of low-level flight in a cluttered environment and intoxication led directly to the collision with infrastructure and the subsequent crash into a home.

Safety message

This accident underscores the critical importance of maintaining safe altitudes above populated areas and the severe risks associated with flying while impaired by alcohol. Pilots must ensure they are sober and capable of making sound decisions before operating an aircraft, especially in environments with numerous ground obstacles.

Probable cause

The pilot's impairment due to alcohol and the decision to fly at a low altitude over residential areas, which led to collision with a utility pole and trees.

Frequently asked questions

What happened in the 1986-07-26 Stinson 108-3 accident near Shiocton, WI?

An aircraft flying at treetop level over residential areas collided with a utility pole and trees before crashing into a home, resulting in destruction of the plane and extensive property damage.

What aircraft was involved and where did it happen?

The accident on 1986-07-26 involved a Stinson 108-3, registration N6567M, operated by R. L. Heinz, at Shiocton, WI.

What was the probable cause of the accident?

The pilot's impairment due to alcohol and the decision to fly at a low altitude over residential areas, which led to collision with a utility pole and trees.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X34099. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.

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