# NTSB Accident DEN07CA131
> **Robinson Helicopter R22 Beta** · 2007-07-31 · Erie, CO, USA · NONE
## Event
- **NTSB number:** DEN07CA131
- **Event ID:** 20070810X01162
- **Type:** Accident
- **Date:** 2007-07-31
- **Location:** Erie, CO, USA
- **Coordinates:** 40.000831, -105.034721
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** Robinson Helicopter
- **Model:** R22 Beta
- **Registration:** N7508Y
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The student pilot's failure to maintain rotor rpm resulting in a loss of aircraft control during a simulated 180 degree auto-rotation. Contributing to the accident was the inadequate flight status supervision by the flight instructor and the student pilot's inadequate recovery procedures.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DEN07CA131) · AI Analytics · CC0 1.0*