# NTSB Accident LAX99LA103
> **ZIVKO AERONAUTICS EDGE 540** · 1999-02-19 · LIVERMORE, CA, USA · NONE
## Event
- **NTSB number:** LAX99LA103
- **Event ID:** 20001205X00191
- **Type:** Accident
- **Date:** 1999-02-19
- **Location:** LIVERMORE, CA, USA
- **Coordinates:** 37.680805, -121.750274
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** ZIVKO AERONAUTICS
- **Model:** EDGE 540
- **Registration:** N9ND
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The manufacturer's inadequate quality control procedures, which allowed an improperly manufactured crankshaft to be shipped, resulting in the separation of one counterweight from the crankshaft lug and the subsequent catastrophic internal failure of the engine.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX99LA103) · AI Analytics · CC0 1.0*