# NTSB Accident LAX04TA052
> **Eurocopter France AS 350 B3** · 2003-11-25 · Yuma, AZ, USA · NONE
## Event
- **NTSB number:** LAX04TA052
- **Event ID:** 20031219X02069
- **Type:** Accident
- **Date:** 2003-11-25
- **Location:** Yuma, AZ, USA
- **Coordinates:** 32.654998, -114.606666
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** Eurocopter France
- **Model:** AS 350 B3
- **Registration:** N846BP
- **FAR Part:** PUBU
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** NBRT
- **Weather:** VMC
## Probable cause

The malfunction of the rotor drive system due to improper maintenance, which resulted in the uncoupling of the drive shaft during takeoff-initial climb.  A factor associated with the accident is the undertorqued drive system bolts.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX04TA052) · AI Analytics · CC0 1.0*