# NTSB Accident IAD97LA104
> **Bell 47G-3B-1** · 1997-07-26 · MT. VERNON, OH, USA · MINR
## Event
- **NTSB number:** IAD97LA104
- **Event ID:** 20001208X08410
- **Type:** Accident
- **Date:** 1997-07-26
- **Location:** MT. VERNON, OH, USA
- **Coordinates:** 40.390651, -82.469184
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 3
- **Total aboard:** 7
## Aircraft
- **Make:** Bell
- **Model:** 47G-3B-1
- **Registration:** N35134
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's failure to maintain rotor RPM.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=IAD97LA104) · AI Analytics · CC0 1.0*