No fatalities

SCHLEICHER ASW20C accident at Clayton, CA, 7 Nov 2020

Clayton, CA, United States

On November 7, 2020, a SCHLEICHER ASW20C operated by Paul N Loewenstine was involved in an aviation accident near Clayton, CA. No fatalities were reported. Investigators recorded the probable cause as: The failure of both pilots of each glider to see an avoid one another while maneuvering, which resulted in a mid-air collision. This summary draws on records from NTSB.

SourcesNTSBPrimary reportUpdated 2026-08-03Data APIEditorial standards

Probable cause

The failure of both pilots of each glider to see an avoid one another while maneuvering, which resulted in a mid-air collision.

— NTSB Determination

Contributing factors

Effect on equipmentPilot