Casualties unknown

Unrated Pilot Loses Control in IMC, Crashes on Slope (N5764P)

Ashland, OR, US

On November 29, 1993, a Piper PA-24 (registration N5764P) operated by Grant L. Brown was involved in an aviation accident near Ashland, OR. Investigators recorded the probable cause as: The pilot's decision to operate the aircraft in instrument meteorological conditions without an instrument rating, which led to a loss of control. 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 2026-06-10Data APIEditorial standards

A pilot without instrument rating flew into instrument meteorological conditions and lost control of the aircraft, resulting in a crash onto a steep slope. Witnesses reported erratic engine sounds before impact.

What happened

Witnesses observed the aircraft prior to the accident and reported hearing engine noises that suggested the pilot was performing aerobatic maneuvers. Suddenly, the engine noise ceased as the aircraft crashed. The investigation determined that the aircraft impacted a slope with a 30-degree incline while in a steep descending dive.

The investigation

The investigation focused on the circumstances surrounding the crash and the condition of the aircraft upon impact. Investigators noted the steep angle of the terrain where the wreckage came to rest. The sudden cessation of engine noise reported by witnesses was consistent with the aircraft entering an unrecoverable attitude.

Findings

The weather conditions at the time of the accident were described by witnesses as instrument meteorological conditions (IMC). A critical factor in the incident was that the pilot was not instrument rated. Flying into IMC without proper certification and training likely contributed to the loss of control. The aircraft type and registration are not specified in the provided source text.

Safety message

Pilots must strictly adhere to their rating limitations. Attempting to fly in instrument meteorological conditions without an instrument rating is extremely dangerous and can lead to spatial disorientation and loss of control.

Probable cause

The pilot's decision to operate the aircraft in instrument meteorological conditions without an instrument rating, which led to a loss of control.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X13793. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.