Helicopter tail boom damage during landing at baseball field

Casualties unknown • Cibecue, AZ, US

A helicopter sustained damage to its tail boom after a hard landing at an improvised landing zone while attempting to pick up a medical patient.

What happened

On the date of the accident, a helicopter was performing an approach to an improvised landing zone located at a baseball field to retrieve a medical patient. The pilot had previously landed at this same location several days prior and was anticipating encountering blowing dirt during the approach.

As the aircraft descended to approximately 3 feet above ground level and slowed to roughly 10 knots, a dust cloud began to form. A medical crewmember on board reported that the aircraft appeared to be descending faster than normal during the final approach. As the helicopter entered ground effect, significant amounts of dust were stirred up, which reduced visibility. The aircraft made a firm touchdown on the right skid, followed immediately by the left skid. This hard landing resulted in damage to the tail boom.

Findings

  • The pilot encountered a dust cloud during the final stages of the approach.
  • A medical crewmember observed a descent rate faster than normal.
  • There were no preimpact mechanical malfunctions or failures reported by the operator.

Probable cause

The helicopter experienced a hard landing on the skids, resulting in tail boom damage, during an approach to an improvised landing zone where visibility was reduced by a dust cloud.

Frequently asked questions

What happened in the 2004-06-26 Eurocopter France AS350B3 accident near Cibecue, AZ?

A helicopter sustained damage to its tail boom after a hard landing at an improvised landing zone while attempting to pick up a medical patient.

What aircraft was involved and where did it happen?

The accident on 2004-06-26 involved a Eurocopter France AS350B3, registration N5226R, operated by Native American Air Ambulance Inc, at Cibecue, AZ.

What was the probable cause of the accident?

The helicopter experienced a hard landing on the skids, resulting in tail boom damage, during an approach to an improvised landing zone where visibility was reduced by a dust cloud.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20040917X01456. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.

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