Casualties unknown

Non-Instrument Rated Pilot Loses Radar Contact During VFR Flight (N6528J)

Mount Wilson, CA, US

On September 19, 1990, a Piper PA-28-180 (registration N6528J) operated by MC Collough, Floyd was involved in an aviation accident near Mount Wilson, CA. Investigators recorded the probable cause as: THE PILOT'S INADVERTENT FLIGHT INTO IMC. CONTRIBUTING FACTORS RELATED TO THE PILOT'S FAILURE TO REQUEST IN-FLIGHT WEATHER AVOIDANCE ASSISTANCE AND HIS MISJUDGED EVALUATION OF THE EN ROUTE WEATHER. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 4 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 2,800-hour private pilot, non-instrument rated, departed VFR into dark overcast skies. Eight minutes after takeoff, he requested flight following. Radar showed a climb and left turn before contact was lost. The crash site was at 4,750 ft MSL, with clouds reported at 3,800 ft base and 5,700 ft tops.

Pilot and Flight Details

A private pilot with 2,800 hours of flight experience and no instrument rating was familiar with the airplane and the planned route. Before departure, he observed dark overcast sky conditions in the direction of his intended trip and indicated that if the weather deteriorated en route, he would return to the departure airport.

Departure and Radar Contact

The pilot took off under visual flight rules (VFR) and headed east. Eight minutes later, he contacted radar and requested flight following service toward his easterly destination. Two minutes after that, the airplane was identified on radar. Two minutes further into the flight, radar contact was lost.

Radar Data and Weather Conditions

The final four minutes of recorded radar data showed the airplane climbing from 2,600 feet to 3,500 feet MSL and turning 90 degrees left from an easterly heading to a northerly course. Nearby weather reporting facilities indicated that the cloud base was 3,800 feet MSL and the cloud tops were 5,700 feet MSL. The crash site was at an elevation of 4,750 feet MSL.

Investigation Outcome

The investigation did not specify a probable cause for the accident.

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Frequently asked questions

What happened in the 19 Sept 1990 Piper PA-28-180 accident near Mount Wilson, CA?

A 2,800-hour private pilot, non-instrument rated, departed VFR into dark overcast skies. Eight minutes after takeoff, he requested flight following. Radar showed a climb and left turn before contact was lost. The crash site was at 4,750 ft MSL, with clouds reported at 3,800 ft base and 5,700 ft tops.

What aircraft was involved and where did it happen?

The accident on 19 Sept 1990 involved a Piper PA-28-180, registration N6528J, operated by MC Collough, Floyd, at Mount Wilson, CA.

What was the probable cause of the accident?

THE PILOT'S INADVERTENT FLIGHT INTO IMC. CONTRIBUTING FACTORS RELATED TO THE PILOT'S FAILURE TO REQUEST IN-FLIGHT WEATHER AVOIDANCE ASSISTANCE AND HIS MISJUDGED EVALUATION OF THE EN ROUTE WEATHER.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X24310. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.