# NTSB Accident ERA14LA099
> **BELL 47D1** · 2014-01-21 · Pell City, AL, USA · MINR
## Event
- **NTSB number:** ERA14LA099
- **Event ID:** 20140121X71107
- **Type:** Accident
- **Date:** 2014-01-21
- **Location:** Pell City, AL, USA
- **Coordinates:** 33.565277, -86.303337
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 2
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** BELL
- **Model:** 47D1
- **Registration:** N93067
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot’s use of an improper clutch engagement procedure, which resulted in clutch glazing, slippage, and, ultimately, the in-flight disengagement of the clutch and a loss of rotor rpm. Contributing to the accident were the installation of a light-weight clutch assembly and a higher horsepower engine, both of which increased the tendency for clutch slippage, and inadequate inspection of the clutch assembly.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA14LA099) · AI Analytics · CC0 1.0*