Casualties unknown

1987-05-14: Bell 47G-2A (N6786D) — New Prague, MN

New Prague, MN, US

On May 14, 1987, a Bell 47G-2A (registration N6786D) was involved in an aviation accident near New Prague, MN. Investigators recorded the probable cause as: The pilot's failure to maintain control during a downwind turn in gusty wind conditions. 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 helicopter collided with the ground while executing a downwind turn on an agricultural turnaround shortly after takeoff, resulting in a fatal accident.

What happened

The helicopter was engaged in agricultural operations when it departed from the work area. Approximately five minutes into the flight, the aircraft was performing a downwind turn on an agricultural turnaround. During this maneuver, the helicopter lost control and collided with the ground. The impact occurred on a heading of 210 degrees.

The investigation

Investigators examined the site of the accident and subsequently conducted a detailed inspection of the airframe and engine. The examination revealed no evidence of powerplant malfunction, flight control system failure, structural issues, or other system malfunctions that could have contributed to the accident.

Findings

Weather conditions at the time of the accident included wind from 326 degrees at 14 knots, with gusts reaching 22 knots. The combination of the downwind turn and the gusty wind conditions likely contributed to the loss of control. No mechanical failures were identified during the investigation.

Safety message

Pilots conducting agricultural operations should be aware of the risks associated with turning in gusty winds, particularly on a downwind leg where ground speed is increased and control authority may be reduced.

Probable cause

The pilot's failure to maintain control during a downwind turn in gusty wind conditions.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X30882. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.