# NTSB Accident NYC97LA101
> **Hiller UH-12E** · 1997-05-29 · GRANBY, NY, USA · SERS
## Event
- **NTSB number:** NYC97LA101
- **Event ID:** 20001208X08007
- **Type:** Accident
- **Date:** 1997-05-29
- **Location:** GRANBY, NY, USA
- **Coordinates:** 43.310565, -76.410659
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Hiller
- **Model:** UH-12E
- **Registration:** N4029S
- **FAR Part:** 137
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

failure of the pilot/owner to replace the torsional clutch as specified by the manufacturer, and subsequent failure of the helicopter's clutch, which resulted in a forced landing (autorotation).  A related factor was: the encounter with trees in the emergency landing area.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=NYC97LA101) · AI Analytics · CC0 1.0*