# NTSB Accident LAX05GA231
> **Eurocopter France EC120B** · 2005-07-14 · Fair Oaks, CA, USA · FATL
## Event
- **NTSB number:** LAX05GA231
- **Event ID:** 20050718X01046
- **Type:** Accident
- **Date:** 2005-07-14
- **Location:** Fair Oaks, CA, USA
- **Coordinates:** 38.639167, -121.220558
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 3
## Aircraft
- **Make:** Eurocopter France
- **Model:** EC120B
- **Registration:** N266SD
- **FAR Part:** PUBU
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The failure of the constant delta P diaphragm in the fuel control unit, which resulted in an increased fuel flow and subsequent catastrophic failure of the engine.  The diaphragm's failure was the result of improper installation by the engine manufacturer.  A factor in the accident was the unsuitable nature of the terrain for a successful autorotation.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX05GA231) · AI Analytics · CC0 1.0*