# NTSB Accident LAX93LA111
> **COBB INTL EXEC 90** · 1993-02-09 · CHANDLER, AZ, USA · NONE
## Event
- **NTSB number:** LAX93LA111
- **Event ID:** 20001211X11838
- **Type:** Accident
- **Date:** 1993-02-09
- **Location:** CHANDLER, AZ, USA
- **Coordinates:** 33.239109, -111.779136
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** COBB INTL
- **Model:** EXEC 90
- **Registration:** N89678
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE MANUFACTURER'S INADEQUATE QUALITY CONTROL WHICH RESULTED IN THE FATIGUE OF THE VALVE STEM.  THE SOFT TERRAIN CONTRIBUTED TO THIS ACCIDENT.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX93LA111) · AI Analytics · CC0 1.0*