# NTSB Accident WPR12LA029
> **BELL 47D1** · 2011-11-08 · San Diego, CA, USA · NONE
## Event
- **NTSB number:** WPR12LA029
- **Event ID:** 20111108X92118
- **Type:** Accident
- **Date:** 2011-11-08
- **Location:** San Diego, CA, USA
- **Coordinates:** 32.572223, -116.980003
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** BELL
- **Model:** 47D1
- **Registration:** N4251A
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The flight instructor's inadequate supervision of the student pilot during a simulated autorotation and the pilots’ failure to use carburetor heat while operating at reduced engine power while in carburetor icing conditions, which resulted in a loss of engine power.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR12LA029) · AI Analytics · CC0 1.0*