Casualties unknown

1998-09-17: Bell 47-G-2 (N1575) — Versatile Helicopters Inc. — Ardmore, OK

Ardmore, OK, US

On September 17, 1998, a Bell 47-G-2 (registration N1575) operated by Versatile Helicopters Inc. was involved in an aviation accident near Ardmore, OK. Investigators recorded the probable cause as: The student pilot's failure to maintain directional control after the tail rotor contacted the ground. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 2 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

A solo student pilot lost control of a helicopter when the tail rotor struck the ground, causing the aircraft to spin and roll onto its side during landing attempts.

What happened

A solo student pilot was operating a helicopter when an incident occurred resulting in damage to the aircraft. The sequence of events began with the tail rotor contacting the ground surface. Witnesses present at the scene observed that immediately following this contact, the aircraft spun rapidly to the right.

After the initial loss of control and rotation, the student pilot attempted to recover by setting the helicopter back down. During this landing attempt, the aircraft rolled onto its side. The weather conditions at the time of the accident were reported as calm, with no significant wind factors contributing to the event.

The investigation

Investigation into the incident focused on the mechanical interaction between the tail rotor and the ground. Examination confirmed that the tail rotor struck the surface, which initiated the loss of directional control. The subsequent spin to the right was a direct result of this contact. No other mechanical failures were identified in the provided narrative.

Findings

The primary factor leading to the accident was the tail rotor contacting the ground. This event caused the student pilot to lose control of the helicopter. The inability to maintain directional stability resulted in the aircraft spinning and eventually rolling onto its side during the attempt to land. The calm wind conditions did not mitigate the loss of control caused by the rotor strike.

Probable cause

The student pilot's failure to maintain directional control after the tail rotor contacted the ground.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X11061. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.