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

Frequently asked questions

What happened in the 7 Nov 2020 SCHLEICHER ASW20C accident near Clayton, CA?

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

Were there any fatalities in the 7 Nov 2020 SCHLEICHER ASW20C accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 7 Nov 2020 involved a SCHLEICHER ASW20C, operated by Paul N Loewenstine, at Clayton, CA.

What was the probable cause of the accident?

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