Casualties unknown

1999-10-06: Cessna 210B (N9609X) — George W. Mojonnier — Tonopah, NV

Tonopah, NV, US

On October 6, 1999, a Cessna 210B (registration N9609X) operated by George W. Mojonnier was involved in an aviation accident near Tonopah, NV. Investigators recorded the probable cause as: The pilot's failure to monitor his altitude and maintain an adequate terrain clearance during the approach. The dark night lighting conditions and the visual illusion created by the lack of ground reference lights were factors in the accident. 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 1781061362Data APIEditorial standards

During a night approach at a sparsely populated airport, the pilot lost sight of runway threshold lights and lost excessive altitude on downwind. The left main wheel touched ground during base turn, collapsing the gear.

Accident Overview

An airplane accident occurred during a night approach at a small airport. The airport operator reported that the night was very dark, making visual orientation challenging. The airplane had requested flight advisories on the Unicom frequency before arrival.

Sequence of Events

The airport operator illuminated the runway lights in response to the aircraft's approach and awaited its arrival. When the airplane did not appear and the runway lights automatically shut off, the operator began searching for the aircraft. He spotted a rotating red light in the area where the base leg of the approach pattern would typically be flown. Driving to the location, he discovered the airplane had crashed.

Airport Conditions

The airport operator noted that the surrounding area is very sparsely populated, with the only visible visual cues during night approaches being the runway lights themselves. There were no other lights or landmarks to aid the pilot's orientation.

Pilot Report

The pilot stated that he lost sight of the runway threshold lights while on the downwind leg of the approach. This led to an unintentional loss of excessive altitude. During the subsequent base turn, the left main wheel made contact with the ground. The airplane rolled a short distance before the landing gear collapsed, and the aircraft slid to a stop.

No further details about the aircraft or occupants were provided in the report.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X19981. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.