Casualties unknown

Ground Loop During Takeoff Damages Aircraft at Ranch Runway (N1851P)

Glenrock, WY, US

On April 14, 1987, a Piper PA-18-150 (registration N1851P) operated by Bob Boner was involved in an aviation accident near Glenrock, WY. 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 2026-06-10Data APIEditorial standards

A private pilot lost directional control during takeoff from an unimproved ranch runway when the elevator trim was not set for takeoff, resulting in a ground loop and substantial damage to the right wing and landing gear.

Accident Summary

A private pilot experienced a loss of directional control during takeoff from an unimproved ranch runway, leading to a ground loop that caused substantial damage to the aircraft. The pilot reported that the elevator trim was not set for takeoff.

Sequence of Events

The pilot planned a local flight departing from the unimproved ranch runway. During the takeoff roll, as the tailwheel lifted off the ground, the aircraft veered to the left. The pilot attempted to correct the swerve using rudder input, but directional control was lost. Subsequently, the aircraft ground-looped, resulting in the right wing making contact with the runway surface.

Damage

Substantial damage was sustained to the right wing and the right main landing gear.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X30648. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.