# NTSB Accident LAX89DUQ05
> **RUPPERCHT VARIEZE** · 1989-09-02 · CALIFORNIA CITY, CA, USA · FATL
## Event
- **NTSB number:** LAX89DUQ05
- **Event ID:** 20001213X29392
- **Type:** Accident
- **Date:** 1989-09-02
- **Location:** CALIFORNIA CITY, CA, USA
- **Coordinates:** 35.149639, -117.920059
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** RUPPERCHT
- **Model:** VARIEZE
- **Registration:** N393D
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE WING FAILED DUE TO THE PILOT/OWNERS OVERTORQUING THE WING BOLTS AND THE IMPROPER INSTALLATION OF THE WING ATTACH PLATES/CONES.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX89DUQ05) · AI Analytics · CC0 1.0*