Casualties unknown

1996-07-27: Grumman G-164A (N4630) — Macksville, KS

Macksville, KS, US

On July 27, 1996, a Grumman G-164A (registration N4630) was involved in an aviation accident near Macksville, KS. Investigators recorded the probable cause as: The pilot's decision to abort the takeoff after becoming airborne with insufficient airspeed on a rough runway, which resulted in an off-runway impact with a dirt mound and inversion of the aircraft. 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

A Cessna 172R became airborne with insufficient airspeed during takeoff on a rough runway. The pilot aborted the attempt, struck a dirt mound, and the aircraft landed inverted without reported mechanical failure.

What happened

The incident occurred during the initial phase of flight at an airport where the runway surface was noted to be in poor condition. According to the pilot's report, the roughness of the pavement contributed to the difficulty in maintaining control and speed during the ground roll.

As the airplane accelerated down the runway, it lifted off the ground before reaching a safe flying speed. Recognizing that the airspeed was insufficient to sustain level flight or climb, the pilot made the decision to abort the takeoff immediately. During this aborted maneuver, the aircraft left the paved surface and traveled onto the terrain at the end of the runway.

The airplane then struck a dirt mound located just beyond the runway threshold. The impact with this obstacle caused the aircraft to flip over, coming to rest in an inverted position on its back. Despite the severe damage implied by the final resting position, the pilot did not report any prior mechanical malfunctions with the airplane or its engine that would have contributed to the event.

Findings

The investigation focused on the sequence of events leading to the loss of control and the subsequent impact. Key factors identified included:

  • Insufficient airspeed at the moment of initial lift-off, which prevented the pilot from recovering altitude or maintaining controlled flight.
  • Rough runway surface, which likely exacerbated the difficulty in achieving proper rotation speed and contributed to the premature or uncontrolled departure from the ground.
  • Impact with a dirt mound, which resulted in the aircraft inverting. The presence of this obstacle at the end of the runway was a critical factor in the severity of the outcome.

No mechanical failures were reported by the pilot, suggesting that the event was primarily caused by operational factors related to takeoff performance and runway conditions rather than equipment failure.

Probable cause

The pilot's decision to abort the takeoff after becoming airborne with insufficient airspeed on a rough runway, which resulted in an off-runway impact with a dirt mound and inversion of the aircraft.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001208X06200. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.