# NTSB Accident ERA21LA339
> **ENSTROM 280** · 2021-08-21 · Port Orange, FL, USA · NONE
## Event
- **NTSB number:** ERA21LA339
- **Event ID:** 20210826103759
- **Type:** Accident
- **Date:** 2021-08-21
- **Location:** Port Orange, FL, USA
- **Coordinates:** 29.079762, -81.04711
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** ENSTROM
- **Model:** 280
- **Registration:** N9285
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The failure of the tail rotor drive shaft at the coupling due to torsionally applied shear stress.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA21LA339) · AI Analytics · CC0 1.0*