# NTSB Accident LAX90LA029
> **Bell-Kitz Kopters 47D1** · 1989-11-10 · CHINO, CA, USA · NONE
## Event
- **NTSB number:** LAX90LA029
- **Event ID:** 20001213X29821
- **Type:** Accident
- **Date:** 1989-11-10
- **Location:** CHINO, CA, USA
- **Coordinates:** 33.999855, -117.679786
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** Bell-Kitz Kopters
- **Model:** 47D1
- **Registration:** N6324X
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

A FATIGUE FAILURE OF BOTH THE MAIN ROTOR STABILIZER BAR TUBE AND THE TIE ROD. IN ADDITION, THE TIE ROD NUT WAS LOOSE AND DID NOT CONFORM TO ENGINEERING DRAWING SPECIFICATIONS. COMPANY PERSONNEL FAILED TO DETECT THE FATIGUE CRACKS DURING DAILY INSPECTIONS.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX90LA029) · AI Analytics · CC0 1.0*