No fatalities

George A. Thiel Just Aircraft Highla accident at Monroe, WA, 21 Sept 2021

Monroe, WA, United States

On September 21, 2021, a George A. Thiel Just Aircraft Highla was involved in an aviation accident near Monroe, WA. No fatalities were reported. Investigators recorded the probable cause as: The in-flight malfunction of the throttle control pivot arm, which resulted in a total loss of engine power and the subsequent collision with terrain during the forced landing. This summary draws on records from NTSB.

SourcesNTSBPrimary reportUpdated 2026-08-03Data APIEditorial standards

Probable cause

The in-flight malfunction of the throttle control pivot arm, which resulted in a total loss of engine power and the subsequent collision with terrain during the forced landing.

— NTSB Determination

Contributing factors

MalfunctionEffect on operation