# NTSB Accident LAX05LA020
> **American Eurocopter AS350-BA** · 2004-11-09 · Oxnard, CA, USA · MINR
## Event
- **NTSB number:** LAX05LA020
- **Event ID:** 20041130X01889
- **Type:** Accident
- **Date:** 2004-11-09
- **Location:** Oxnard, CA, USA
- **Coordinates:** 34.199722, -119.218612
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 2
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** American Eurocopter
- **Model:** AS350-BA
- **Registration:** N655TV
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The inadvertent in-flight engagement of the collective down lock, which resulted in an uncontrolled descent and ground impact.  The collective down lock engagement was likely due to a combination of the reduced clearance between the lock plate and the collective with this avionics panel design, the collective down lock alignment/adjustment, and the tendency of the flexible lock plate to vibrate with the natural harmonic rhythmus of the helicopter.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX05LA020) · AI Analytics · CC0 1.0*