No fatalities

VASHON AIRCRAFT RANGER R7 accident at Upland, CA, 18 Apr 2023

Upland, CA, United States

On April 18, 2023, a VASHON AIRCRAFT RANGER R7 operated by CKD ENGINEERING LLC DBA was involved in an aviation accident near Upland, CA. No fatalities were reported. Investigators recorded the probable cause as: The pilot's improper selection of the mixture control, which resulted in a total loss of engine power and a collision with the airport boundary fence during a forced landing. This summary draws on records from NTSB; 2 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 2026-08-03Data APIEditorial standards

Probable cause

The pilot's improper selection of the mixture control, which resulted in a total loss of engine power and a collision with the airport boundary fence during a forced landing.

— NTSB Determination

Contributing factors

Contributed to outcomePilot

Frequently asked questions

What happened in the 18 Apr 2023 VASHON AIRCRAFT RANGER R7 accident near Upland, CA?

The pilot's improper selection of the mixture control, which resulted in a total loss of engine power and a collision with the airport boundary fence during a forced landing.

Were there any fatalities in the 18 Apr 2023 VASHON AIRCRAFT RANGER R7 accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 18 Apr 2023 involved a VASHON AIRCRAFT RANGER R7, operated by CKD ENGINEERING LLC DBA, at Upland, CA.

What was the probable cause of the accident?

The pilot's improper selection of the mixture control, which resulted in a total loss of engine power and a collision with the airport boundary fence during a forced landing.