# NTSB Accident NYC94FA106
> **SIKORSKY S-76B** · 1994-06-30 · NEWPORT, RI, USA · NONE
## Event
- **NTSB number:** NYC94FA106
- **Event ID:** 20001206X01604
- **Type:** Accident
- **Date:** 1994-06-30
- **Location:** NEWPORT, RI, USA
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 3
- **Total aboard:** 3
## Aircraft
- **Make:** SIKORSKY
- **Model:** S-76B
- **Registration:** N76UT
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DUSK
- **Weather:** VMC
## Probable cause

the failure of the left hand helical gear in the main gear box (MGB), due to undertorqued attaching bolts installed by the manufacturer, which resulted in a partial MGB failure. This failure resulted in the loss of the number one engine, illumination of the MGB chip light and a ditching to salt water on emergency floats.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=NYC94FA106) · AI Analytics · CC0 1.0*