Casualties unknown

2000-10-23: Mooney M-20J (N40VF) — Wheaton Springs, CA

Wheaton Springs, CA, US

On October 23, 2000, a Mooney M-20J (registration N40VF) was involved in an aviation accident near Wheaton Springs, CA. Investigators recorded the probable cause as: The pilot's inadequate weather evaluation and attempted VFR flight into IMC, which resulted in the in-flight collision with mountainous terrain. 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 1781061362Data APIEditorial standards

An instrument-rated commercial pilot reported being in clouds and picking up ice during a VFR cross-country flight before the airplane impacted mountainous terrain. The pilot had received a weather briefing advising that VFR flight was not recommended.

Accident Summary

The accident occurred when the airplane impacted mountainous terrain after the instrument-rated commercial pilot reported that he was in clouds and was picking up ice during a visual flight rules (VFR) cross-country flight. The pilot had obtained an updated weather briefing at the departure airport, which advised him that VFR flight along his planned route was not recommended.

Weather Information

A review of weather data indicated that the freezing level was at 9,536 feet mean sea level (msl). The bases of clouds ranged anywhere from 400 feet to 3,000 feet above ground level (agl), and the cloud tops in the area of the accident site were 22,000 feet. The accident site was at the 4,650-foot level of the mountain.

Aircraft Examination

No anomalies with the engine or airplane were noted that would have prevented their normal operation.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X22183. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.