Casualties unknown

2006-09-24: Robinson R22 (N468SH) — Silver State Helicopters Llc. — Skiatook, OK

Skiatook, OK, US

On September 24, 2006, a Robinson R22 (registration N468SH) operated by Silver State Helicopters Llc. was involved in an aviation accident near Skiatook, OK. Investigators recorded the probable cause as: The pilot's failure to maintain control of the helicopter following an encounter with dynamic rollover. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

A pilot with extensive fixed-wing experience lost control of a helicopter during his first solo flight, resulting in a dynamic rollover after an unexpected takeoff.

Incident Overview

A pilot with 1,365 hours of single-engine airplane experience and 33 hours of helicopter flight instruction lost control of the helicopter while attempting his first solo takeoff. The incident occurred on a parallel taxiway to runway 35, with the helicopter on a heading of 350 degrees.

Sequence of Events

According to the pilot's report, the helicopter became airborne suddenly with much less collective input than expected. As the helicopter lifted off, it began to roll to the right. The pilot overcorrected to the left with cyclic input and lowered the collective. The left skid contacted the ground first, leading to a dynamic roll to the left until the main rotor struck the ground. The helicopter came to rest on its left side.

Pre-Flight Discussion

Before the solo flight, the pilot and his instructor discussed changes in flight characteristics related to single occupancy in the helicopter and the procedures for the flight.

Pilot and Weather Conditions

The pilot was not injured. Weather reported included overcast skies, 10 miles visibility, winds from 340 degrees at 10 knots, and a density altitude of approximately 948 feet.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20060928X01417. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.