# NTSB Accident BFO93LA149
> **LACH BENSEN B-8M** · 1993-09-02 · FALL RIVER, MA, USA · SERS
## Event
- **NTSB number:** BFO93LA149
- **Event ID:** 20001211X13326
- **Type:** Accident
- **Date:** 1993-09-02
- **Location:** FALL RIVER, MA, USA
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** LACH
- **Model:** BENSEN B-8M
- **Registration:** N8447
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

FATIGUE FAILURE OF THE GYROCOPTER'S MAIN ROTOR CONTROL ARM.  fACTORS RELATED TO THE ACCIDENT WERE: A LOOSE CLAMP ON THE ROTOR CONTROL ARM, DUE TO INADEQUATE MAINTENANCE OR INSPECTION, WHICH RESULTED IN CHAFING OF THE CONTROL ARM.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=BFO93LA149) · AI Analytics · CC0 1.0*