# NTSB Accident NYC91DFA02
> **HAYES KOLB/TWINSTAR** · 1991-01-27 · ROUND LAKE, NY, USA · FATL
## Event
- **NTSB number:** NYC91DFA02
- **Event ID:** 20001212X16363
- **Type:** Accident
- **Date:** 1991-01-27
- **Location:** ROUND LAKE, NY, USA
- **Coordinates:** 42.930622, -73.790245
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** HAYES
- **Model:** KOLB/TWINSTAR
- **Registration:** N71817
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DUSK
- **Weather:** VMC
## Probable cause

IN-FLIGHT STRUCTURAL FAILURE OF THE OUTBOARD WING ATTACHMENT FITTINGS ON BOTH WINGS DUE TO AN UNDETERMINED REASON.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=NYC91DFA02) · AI Analytics · CC0 1.0*