# NTSB Accident LAX91FA052
> **de Havilland DHC-6-100** · 1990-12-09 · PERRIS VALLEY, CA, USA · MINR
## Event
- **NTSB number:** LAX91FA052
- **Event ID:** 20001212X24764
- **Type:** Accident
- **Date:** 1990-12-09
- **Location:** PERRIS VALLEY, CA, USA
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 20
- **Total aboard:** 21
## Aircraft
- **Make:** de Havilland
- **Model:** DHC-6-100
- **Registration:** N121PM
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

A LOSS OF POWER ON THE LEFT ENGINE DUE TO A FATIGUE FAILURE OF A COMPRESSOR TURBINE BLADE LEADING TO FURTHER COMPRESSOR BLADE DAMAGE; A WORN POWER TURBINE GOVERNOR THROTTLE CAM ASSEMBLY WHICH LED TO LOSS OF POWER ON THE RIGHT ENGINE; AND INADEQUATE MAINTENANCE AND INSPECTION BY THE OPERATOR.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX91FA052) · AI Analytics · CC0 1.0*