# NTSB Accident DEN91FA039
> **PIPER PA-24-400** · 1991-02-08 · SNOWMASS, CO, USA · FATL
## Event
- **NTSB number:** DEN91FA039
- **Event ID:** 20001212X16435
- **Type:** Accident
- **Date:** 1991-02-08
- **Location:** SNOWMASS, CO, USA
- **Coordinates:** 39.329299, -106.980567
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** PIPER
- **Model:** PA-24-400
- **Registration:** N8510P
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE PILOT'S FAILURE TO MAINTAIN A PROPER ALTITUDE IN MOUNTAINOUS TERRAIN.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DEN91FA039) · AI Analytics · CC0 1.0*