Casualties unknown

Engine Cylinder Anomaly Leads to Descent Through Trees and Power Lines (N2397J)

Fulton, MO, US

On June 22, 1996, a Beech 23 (registration N2397J) was involved in an aviation accident near Fulton, MO. Investigators recorded the probable cause as: the inadequate intake valve springs on the #1 cylinder. 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 2026-07-04Data APIEditorial standards

Witnesses observed abnormal black smoke after takeoff. The aircraft descended through trees and power lines. Postaccident inspection found compression loss in the #1 cylinder, darker manifold areas, and out-of-tolerance valve springs.

Accident Overview

Following takeoff, witnesses reported an abnormal amount of black smoke trailing from the aircraft. The airplane subsequently descended, impacting trees and power lines along its path.

Postaccident Investigation

During the postaccident examination, the engine's #1 cylinder was found to have no compression when checked. After manually prying back the intake valve of the #1 cylinder, compression was restored when the propeller was rotated. The intake and exhaust manifold areas of the #1 cylinder appeared darker in color compared to the other cylinders. Additionally, the valve springs in the #1 cylinder were found to be outside the tolerances specified by the manufacturer.

Frequently asked questions

What happened in the 22 Jun 1996 Beech 23 accident near Fulton, MO?

Witnesses observed abnormal black smoke after takeoff. The aircraft descended through trees and power lines. Postaccident inspection found compression loss in the #1 cylinder, darker manifold areas, and out-of-tolerance valve springs.

What aircraft was involved and where did it happen?

The accident on 22 Jun 1996 involved a Beech 23, registration N2397J, at Fulton, MO.

What was the probable cause of the accident?

the inadequate intake valve springs on the #1 cylinder.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001208X05911. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.