# NTSB Accident NYC92GA147
> **SIKORSKY S-76A** · 1992-08-07 · GRAEFENBURG, KY, USA · SERS
## Event
- **NTSB number:** NYC92GA147
- **Event ID:** 20001211X15488
- **Type:** Accident
- **Date:** 1992-08-07
- **Location:** GRAEFENBURG, KY, USA
- **Coordinates:** 38.190685, -84.859603
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 5
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 6
## Aircraft
- **Make:** SIKORSKY
- **Model:** S-76A
- **Registration:** N50KY
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

AN INADEQUATE PREFLIGHT INSPECTION BY THE FLIGHT CREW BY FAILING TO ASSURE THAT ALL FOUR OF THE ENGINE COWLING LATCHES WERE PROPERLY SECURED, WHICH RESULTED IN SUBSEQUENT FAILURE OF SECTION II OF THE TAIL ROTOR DRIVESHAFT AFTER THE COWLING CONTACTED THE MAIN ROTOR BLADES AND TAIL ROTOR DRIVESHAFT.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=NYC92GA147) · AI Analytics · CC0 1.0*