Casualties unknown

Runway Departure and Ditch Impact Due to Unlocked Tailwheel (N72409)

Grain Valley, MO, US

On July 28, 1999, a Beech C-45H (registration N72409) was involved in an aviation accident near Grain Valley, MO. Investigators recorded the probable cause as: The pilot's failure to ensure the tailwheel was locked prior to takeoff, which resulted in the aircraft departing the runway. 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 2026-06-10Data APIEditorial standards

An aircraft departed the runway during takeoff and struck a ditch. Investigation revealed the tailwheel was not locked, with no other mechanical anomalies found.

What happened

The aircraft departed the prepared runway surface while in the takeoff phase of flight. It subsequently impacted a ditch located adjacent to the runway.

The investigation

A Federal Aviation Administration inspector conducted a post-accident examination of the airframe and systems. The inspection revealed that the tailwheel was not in the locked position. No other anomalies were identified that could be associated with a preexisting mechanical condition.

Probable cause

The pilot's failure to ensure the tailwheel was locked prior to takeoff, which resulted in the aircraft departing the runway.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X19219. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.