# NTSB Accident WPR15LA253
> **BEECH C90** · 2015-08-28 · Las Vegas, NV, USA · NONE
## Event
- **NTSB number:** WPR15LA253
- **Event ID:** 20150831X30510
- **Type:** Accident
- **Date:** 2015-08-28
- **Location:** Las Vegas, NV, USA
- **Coordinates:** 36.099445, -115.162498
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 5
- **Total aboard:** 5
## Aircraft
- **Make:** BEECH
- **Model:** C90
- **Registration:** N959MC
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The jet flight crew's use of an inappropriate checklist to resolve a parking brake hydraulic system pressure anomaly, which resulted in the airplane rolling down a slight incline and colliding with the parked twin-engine turboprop airplane. Contributing to the accident was the defective parking brake check valve.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR15LA253) · AI Analytics · CC0 1.0*