# NTSB Accident SEA99LA001
> **Aerospatiale SA-315B** · 1998-10-05 · BIG SKY, MT, USA · MINR
## Event
- **NTSB number:** SEA99LA001
- **Event ID:** 20001211X11347
- **Type:** Accident
- **Date:** 1998-10-05
- **Location:** BIG SKY, MT, USA
- **Coordinates:** 45.260505, -111.319572
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Aerospatiale
- **Model:** SA-315B
- **Registration:** N5803J
- **FAR Part:** 133
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The failure of the ground handlers (chokers) to follow procedures, and separation of the tail rotor system. Contributing factors were incorrect long line hook (size), jamming of the hook release, trees and gusty wind conditions.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=SEA99LA001) · AI Analytics · CC0 1.0*