No fatalities

4 Jun 2011: SCHWEIZER 269C — Airwork, LLC — Las Vegas, NV

Las Vegas, NV, United States

On 4 Jun 2011, a SCHWEIZER 269C operated by Airwork, LLC was involved in an aviation accident near Las Vegas, NV. No fatalities were reported. Investigators recorded the probable cause as: The pilot's failure to maintain adequate clearance from terrain while attempting a transition from hovering flight to forward flight over a mesa in windy, downdraft conditions. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 1778583330Data APIEditorial standards

A pilot reported that while on a sightseeing flight, the helicopter rolled over after its skids impacted rocks during a downdraft encounter near a mesa ridge line.

Incident Overview

A pilot reported that while conducting a sightseeing flight, he flew over a mesa and initiated a hover maneuver approximately 12 feet above a ridge line. As the wind speed increased, the pilot attempted to depart the area. He stated that he encountered a strong downdraft in the estimated 20-knot wind.

Maneuver and Terrain

While flying toward lower elevation terrain on the lee side of the mesa in an effort to depart the area, the helicopter's skids impacted rocks, causing the helicopter to roll over.

Pilot Report

The pilot provided the account of the events, noting the wind conditions and the terrain encountered. No other information was available regarding the helicopter or the pilot.

Contributing factors

Causes

Altitude — Not attained/maintained

Other contributing factors

Contributed to outcome