Casualties unknown

Private Pilot Loses Control in Dense Fog During Local Flight (N1646J)

Newton, IA, US

On March 6, 1993, a Piper PA-28-140 (registration N1646J) operated by Cunningham, Laverne A. was involved in an aviation accident near Newton, IA. Investigators recorded the probable cause as: The pilot's failure to maintain visual reference during flight in marginal weather conditions, which resulted in controlled flight into terrain. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-06-19Data APIEditorial standards

A private pilot operating a local flight encountered dense fog with visibility below one-quarter mile, leading to a crash site located approximately one mile from the departure airport.

What happened

A private pilot holding no instrument rating embarked on a local flight with three passengers aboard. The aircraft departed from the airport and remained in the immediate vicinity for the duration of the initial segment. Approximately fifteen minutes after takeoff, weather conditions deteriorated rapidly as dense fog began to develop across the entire area.

At the time of the incident, visibility was reported to be less than one-quarter mile, creating extremely hazardous visual flight rules conditions. Witnesses in the vicinity heard what they believed to be the sound of the airplane striking a tree before impacting the ground. The crash site was located approximately one mile northwest of the airport from which the flight had originated.

Findings

The primary contributing factor to this accident was the pilot's decision to continue flying into deteriorating weather conditions without the necessary instrument rating. The rapid formation of dense fog reduced visibility well below minimums for safe visual navigation, leading to a loss of situational awareness and control.

Probable cause

The pilot's failure to maintain visual reference during flight in marginal weather conditions, which resulted in controlled flight into terrain.

Frequently asked questions

What happened in the 6 Mar 1993 Piper PA-28-140 accident near Newton, IA?

A private pilot operating a local flight encountered dense fog with visibility below one-quarter mile, leading to a crash site located approximately one mile from the departure airport.

What aircraft was involved and where did it happen?

The accident on 6 Mar 1993 involved a Piper PA-28-140, registration N1646J, operated by Cunningham, Laverne A., at Newton, IA.

What was the probable cause of the accident?

The pilot's failure to maintain visual reference during flight in marginal weather conditions, which resulted in controlled flight into terrain.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X11934. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.