# NTSB Incident DEN91IA026
> **BRITISH AEROSPACE BAE 146-200** · 1990-12-15 · DENVER, CO, USA · NONE
## Event
- **NTSB number:** DEN91IA026
- **Event ID:** 20001212X24752
- **Type:** Incident
- **Date:** 1990-12-15
- **Location:** DENVER, CO, USA
- **Coordinates:** 39.760757, -104.920402
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 57
- **Total aboard:** 57
## Aircraft
- **Make:** BRITISH AEROSPACE
- **Model:** BAE 146-200
- **Registration:** N609AW
- **FAR Part:** 121
- **Engines:** 4
- **Damage:** MINR
## Conditions
- **Light:** NDRK
- **Weather:** VMC
## Probable cause

THE CATASTROPHIC FAILURE OF THE NO.12 BLADE ON THE 4TH STAGE TURBINE WHEEL, AND FAILURE OF COMPANY MAINTENANCE PERSONNEL TO IDENTIFY THE PREEXISTING CRACK DURING MAINTENANCE INSPECTION.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DEN91IA026) · AI Analytics · CC0 1.0*