No fatalities

HILLER UH-12A accident at Mosby, MO, 27 Aug 2023

Mosby, MO, United States

On August 27, 2023, a HILLER UH-12A operated by Pleasure was involved in an aviation accident near Mosby, MO. No fatalities were reported. Investigators recorded the probable cause as: The pilot’s failure to maintain adequate rotor rpm which resulted in a loss of control and impact with terrain. This summary draws on records from NTSB; 1 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 2026-08-03Data APIEditorial standards

Probable cause

The pilot’s failure to maintain adequate rotor rpm which resulted in a loss of control and impact with terrain.

— NTSB Determination

Contributing factors

Powerplant parameters — Not attained/maintainedPilot

Frequently asked questions

What happened in the 27 Aug 2023 HILLER UH-12A accident near Mosby, MO?

The pilot’s failure to maintain adequate rotor rpm which resulted in a loss of control and impact with terrain.

Were there any fatalities in the 27 Aug 2023 HILLER UH-12A accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 27 Aug 2023 involved a HILLER UH-12A, operated by Pleasure, at Mosby, MO.

What was the probable cause of the accident?

The pilot’s failure to maintain adequate rotor rpm which resulted in a loss of control and impact with terrain.