# NTSB Accident CEN20LA187
> **Bell OH-58A** · 2020-05-20 · West Branch, MI, USA · NONE
## Event
- **NTSB number:** CEN20LA187
- **Event ID:** 20200520X22054
- **Type:** Accident
- **Date:** 2020-05-20
- **Location:** West Branch, MI, USA
- **Coordinates:** 44.215557, -84.188056
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** Bell
- **Model:** OH-58A
- **Registration:** N153SA
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's failure to maintain rotor rpm during a precautionary autorotation, which resulted in a hard landing. Contributing to the accident was the airframe vibration for reasons that could not be determined because examination of the helicopter revealed no anomalies.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CEN20LA187) · AI Analytics · CC0 1.0*