No fatalities

HILLER UH-12E accident at Bonners Ferry, ID, 24 Jul 2024

Bonners Ferry, ID, United States

On July 24, 2024, a HILLER UH-12E was involved in an aviation accident near Bonners Ferry, ID. No fatalities were reported. Investigators recorded the probable cause as: The pilot’s improper selection of a landing site, which resulted in a main rotor strike. Contributing to the accident was the pilot’s improper performance planning and altitude selection over water, which resulted in an rpm droop. This summary draws on records from NTSB; 12 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 a landing site, which resulted in a main rotor strike. Contributing to the accident was the pilot’s improper performance planning and altitude selection over water, which resulted in an rpm droop.

— NTSB Determination

Contributing factors

PilotPowerplant parameters — Not attained/maintainedProp/rotor parameters — Not attained/maintained

Frequently asked questions

What happened in the 24 Jul 2024 HILLER UH-12E accident near Bonners Ferry, ID?

The pilot’s improper selection of a landing site, which resulted in a main rotor strike. Contributing to the accident was the pilot’s improper performance planning and altitude selection over water, which resulted in an rpm droop.

Were there any fatalities in the 24 Jul 2024 HILLER UH-12E accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 24 Jul 2024 involved a HILLER UH-12E, at Bonners Ferry, ID.

What was the probable cause of the accident?

The pilot’s improper selection of a landing site, which resulted in a main rotor strike. Contributing to the accident was the pilot’s improper performance planning and altitude selection over water, which resulted in an rpm droop.