Aircraft impact in mountainous terrain during VFR flight

Casualties unknown • Twin Peaks, CA, US

An aircraft crashed into rising mountains at 5,550 feet MSL after the pilot encountered an overcast layer and lost visual contact with the ground.

What happened

While nearing the end of a cross-country flight across the United States, approximately 33 miles from the intended destination, the pilot began a descent and entered an overcast layer. Due to the cloud cover, the pilot could not see the rising mountainous terrain below and was unsure of his exact position.

The pilot contacted Air Traffic Control (ATC) to request assistance, informing the controller that he had found a "hole" in the clouds and intended to fly through it. The aircraft was identified on radar. The controller approved the descent but instructed the pilot to maintain Visual Flight Rules (VFR) at all times.

When the pilot asked the controller for the elevation of the terrain directly beneath him, the controller responded that the terrain was "no factor" for the flight. Shortly after this exchange, the pilot notified ATC that he was losing VFR. The aircraft subsequently impacted mountainous terrain at an elevation of 5,550 feet MSL.

Probable cause

The pilot's descent into an overcast layer resulted in a loss of visual reference to the underlying rising terrain, leading to the impact.

Frequently asked questions

What happened in the 1993-04-24 Piper PA-24-250 accident near Twin Peaks, CA?

An aircraft crashed into rising mountains at 5,550 feet MSL after the pilot encountered an overcast layer and lost visual contact with the ground.

What aircraft was involved and where did it happen?

The accident on 1993-04-24 involved a Piper PA-24-250, registration N6884P, operated by James E. Brown, at Twin Peaks, CA.

What was the probable cause of the accident?

The pilot's descent into an overcast layer resulted in a loss of visual reference to the underlying rising terrain, leading to the impact.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X12156. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.

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