Casualties unknown

Helicopter Collides with Wires During Collision Avoidance Maneuver (N4030A)

Piru, CA, US

On April 15, 1991, a Robinson R-22B (registration N4030A) operated by Ray Klein was involved in an aviation accident near Piru, CA. Investigators recorded the probable cause as: Wire contact caused loss of control and subsequent collision with terrain. 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 2026-07-04Data APIEditorial standards

During a normal takeoff, a helicopter pilot executed a hard dive to avoid a collision with a fixed-wing airplane, resulting in the right skid contacting transmission wires, loss of control, and impact with terrain.

Accident Details

A helicopter was performing a normal takeoff from a local flight training area. According to the pilot, the helicopter had attained an airspeed of approximately 60 miles per hour and an altitude of about 75 feet above ground level. At that point, the pilot observed a single-engine fixed-wing airplane on a collision course with the helicopter. To avoid a collision, the pilot executed a hard dive maneuver.

During the dive, the helicopter's right skid made contact with transmission wires. The wire contact caused a loss of control, and the helicopter subsequently collided with the terrain.

Sequence of Events

The incident began with a routine takeoff. The pilot reported seeing the other aircraft on a collision path and took evasive action by diving. The hard dive brought the helicopter into contact with overhead wires, leading to control difficulties and eventual impact with the ground.

Conclusion

The accident investigation determined that the wire contact resulted in a loss of control and the subsequent collision with terrain. No additional factors or causes have been stated in the source.

Probable cause

Wire contact caused loss of control and subsequent collision with terrain.

Frequently asked questions

What happened in the 15 Apr 1991 Robinson R-22B accident near Piru, CA?

During a normal takeoff, a helicopter pilot executed a hard dive to avoid a collision with a fixed-wing airplane, resulting in the right skid contacting transmission wires, loss of control, and impact with terrain.

What aircraft was involved and where did it happen?

The accident on 15 Apr 1991 involved a Robinson R-22B, registration N4030A, operated by Ray Klein, at Piru, CA.

What was the probable cause of the accident?

Wire contact caused loss of control and subsequent collision with terrain.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X16819. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.