Casualties unknown

1994-09-20: Air Tractor AT-401 (N4549N) — Mcgehee, AR

Mcgehee, AR, US

On September 20, 1994, an Air Tractor AT-401 (registration N4549N) was involved in an aviation accident near Mcgehee, AR. Investigators recorded the probable cause as: The loss of engine power during the swath run operation, which necessitated an emergency landing on unsuitable terrain that resulted in substantial aircraft damage. 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 1781061362Data APIEditorial standards

During a specialized agricultural swath run, an aircraft experienced sudden engine power loss. The pilot executed an emergency landing in a nearby field where the main gear collapsed into soft ground, causing the plane to nose over and come to rest inverted.

What happened

The incident occurred while the aircraft was engaged in a specialized agricultural swath run operation. During this phase of flight, the engine suddenly lost power without prior indication. The pilot initiated an emergency landing procedure and directed the aircraft toward a nearby field.

Upon touchdown, the terrain proved unsuitable for a standard rollout. The main landing gear sank deeply into the soft earth due to insufficient ground bearing capacity. This sudden deceleration caused the nose of the aircraft to pitch forward violently. The aircraft continued to rotate until it came to rest in an inverted position on its back.

The investigation

An FAA inspector conducted a thorough examination of the wreckage at the site. The inspection focused on identifying any mechanical failures or pre-existing anomalies that could have contributed to the power loss. The review included checks of the airframe structure and engine components visible within the debris field.

The examination revealed no mechanical anomalies or irregularities in the aircraft systems. There was no evidence of pre-impact failure in the engine or flight controls. The damage observed, including bent wing spars and tail damage, was consistent with the post-impact forces described in the narrative.

Probable cause

The loss of engine power during the swath run operation, which necessitated an emergency landing on unsuitable terrain that resulted in substantial aircraft damage.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001206X02257. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.