Casualties unknown

Pilot Reports Downdraft and Undershoot During Base Leg (N2NV)

Boulder City, NV, US

On October 12, 1986, a Let L-13 (registration N2NV) was involved in an aviation accident near Boulder City, NV. 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 pilot reported encountering a downdraft on base leg, resulting in an undershoot and high sink rate without timely corrective action. The aircraft struck the ground, rolled through bushes and across a gulley. A passenger contradicted the account, stating the pilot performed an intentional spin and rapid descent using spoilers.

Incident Description

During a flight in the practice area, the aircraft was on base leg when a downdraft was encountered. This led to an undershoot, and a high sink rate developed. The pilot did not take corrective action soon enough. The aircraft struck the ground, rolled a short distance through bushes, and crossed a two-foot gulley before coming to rest.

Pilot Statement

The pilot stated that a downdraft was the cause of the undershoot. He acknowledged that a high sink rate developed and that he did not take corrective action in time. The pilot's account attributes the event to an unexpected atmospheric condition.

Passenger Statement

The passenger provided a contrasting account. He stated that the pilot intentionally entered a spin while in the practice area to show off. Additionally, the passenger indicated that the pilot made a rather rapid descent by using spoilers, which exceeded the limits of the vertical speed indicator. This suggests a deliberate maneuver rather than an inadvertent downdraft.

Aftermath

The aircraft rolled through bushes and across a two-foot gulley before stopping. The source did not specify any injuries or damage beyond the described ground impact. No details were given regarding the aircraft type, registration, or occupant condition.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X35077. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.