# NTSB Accident DEN91LA082
> **BOEING DHC-6-300** · 1991-06-12 · DENVER, CO, USA · NONE
## Event
- **NTSB number:** DEN91LA082
- **Event ID:** 20001212X17241
- **Type:** Accident
- **Date:** 1991-06-12
- **Location:** DENVER, CO, USA
- **Coordinates:** 39.73069, -104.919425
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** BOEING
- **Model:** DHC-6-300
- **Registration:** N242CA
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAWN
- **Weather:** VMC
## Probable cause

THE PILOT'S FAILURE TO PERFORM AN ADEQUATE PREFLIGHT, I.E., NOT FOLLOWING THE CHECK LIST AND THE NORMAL BRAKE SYSTEM WAS INOPERATIVE AS A RESULT OF NO HYDRAULIC SYSTEM PRESSURE (HYDRAULIC SYSTEM CIRCUIT BREAKER NOT 'IN').

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DEN91LA082) · AI Analytics · CC0 1.0*