Casualties unknown

Non-Instrument Rated Pilot Encounters IMC on Night VFR Flight; Wreckage Found in Mountainous Terrain (N9448Y)

Kyburz, CA, US

On February 16, 1991, a Cessna T210N (registration N9448Y) operated by South Tahoe Const. Co. was involved in an aviation accident near Kyburz, CA. Investigators recorded the probable cause as: THE PILOT'S ATTEMPT TO CONDUCT HIS VISUAL FLIGHT INTO INSTRUMENT METEOROLOGICAL CONDITIONS AND THE LOSS OF AIRCRAFT CONTROL BY BECOMING SPATIAL DISORIENTED. THE LOW CEILINGS AND THE DARK NIGHT THAT EXISTED IN THE AREA 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 2026-07-04Data APIEditorial standards

A non-instrument rated pilot took off for a night VFR flight without a weather briefing or flight plan, despite IMC along the route. After failing to arrive, a search using radar data found the wreckage in mountainous terrain.

The Flight

A non-instrument rated pilot departed on a night flight intending to return home under visual flight rules. The pilot did not obtain a weather briefing or file a flight plan. At the time of departure, instrument meteorological conditions existed along the intended route.

Overdue Report and Search

When the aircraft failed to arrive at its destination, the pilot's family reported him overdue. An aerial search was conducted along the aircraft's assumed flight route, but was unsuccessful. Later, a National Track Analysis Program (NTAP) of the aircraft's radar track was obtained from the FAA's Air Traffic Control center.

Wreckage Discovery

Using the NTAP as a guide, a search aircraft located the wreckage in mountainous terrain at the end of the radar plot. The aircraft was found at the location corresponding to the final radar return.

Findings

The pilot was not instrument rated and had chosen to fly at night under visual flight rules without a weather briefing or flight plan. Instrument meteorological conditions were present along the route at the time of the flight. The aircraft's wreckage was discovered in mountainous terrain at the conclusion of its radar track.

Frequently asked questions

What happened in the 16 Feb 1991 Cessna T210N accident near Kyburz, CA?

A non-instrument rated pilot took off for a night VFR flight without a weather briefing or flight plan, despite IMC along the route. After failing to arrive, a search using radar data found the wreckage in mountainous terrain.

What aircraft was involved and where did it happen?

The accident on 16 Feb 1991 involved a Cessna T210N, registration N9448Y, operated by South Tahoe Const. Co., at Kyburz, CA.

What was the probable cause of the accident?

THE PILOT'S ATTEMPT TO CONDUCT HIS VISUAL FLIGHT INTO INSTRUMENT METEOROLOGICAL CONDITIONS AND THE LOSS OF AIRCRAFT CONTROL BY BECOMING SPATIAL DISORIENTED. THE LOW CEILINGS AND THE DARK NIGHT THAT EXISTED IN THE AREA WERE FACTORS IN THE ACCIDENT.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X16461. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.