Casualties unknown

Non-Instrument Rated Pilot Collides with Terrain While Flying Under Special VFR (N5184D)

Livermore, CA, US

On December 26, 1984, a Cessna 172N (registration N5184D) operated by Travis Afb Aero Club was involved in an aviation accident near Livermore, CA. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 3 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-07-04Data APIEditorial standards

A non-instrument rated pilot on a special VFR clearance flew into rising terrain in a pass obscured by clouds, fog, and rain. The aircraft departed in 1,000-foot overcast with 2.5 miles visibility.

Accident Overview

A non-instrument rated pilot departed an airport under a special VFR clearance. Weather conditions at the time of departure were reported as 1,000 feet overcast, visibility 2.5 miles in light rain and fog. The aircraft turned eastbound, following a highway toward a pass in the hills to the east.

Collision with Terrain

While traversing the pass, the aircraft collided with rising terrain approximately midway through the pass. Witnesses driving on the highway reported that the pass was obscured in 'clouds, fog, and rain' at the time of the accident.

Investigation

The accident investigation did not explicitly state a probable cause. The pilot was not instrument rated, and the flight was conducted under special VFR clearance in marginal weather conditions. No further details are available from official sources.

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Frequently asked questions

What happened in the 26 Dec 1984 Cessna 172N accident near Livermore, CA?

A non-instrument rated pilot on a special VFR clearance flew into rising terrain in a pass obscured by clouds, fog, and rain. The aircraft departed in 1,000-foot overcast with 2.5 miles visibility.

What aircraft was involved and where did it happen?

The accident on 26 Dec 1984 involved a Cessna 172N, registration N5184D, operated by Travis Afb Aero Club, at Livermore, CA.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X41812. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.