# NTSB Accident WPR11LA352
> **EUROCOPTER AS 350 B3** · 2011-07-27 · Troutdale, OR, USA · NONE
## Event
- **NTSB number:** WPR11LA352
- **Event ID:** 20110729X63202
- **Type:** Accident
- **Date:** 2011-07-27
- **Location:** Troutdale, OR, USA
- **Coordinates:** 45.549167, -122.399169
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 4
- **Total aboard:** 4
## Aircraft
- **Make:** EUROCOPTER
- **Model:** AS 350 B3
- **Registration:** N808LF
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The in-flight separation of the tail rotor drive shaft cover as a result of maintenance personnel not ensuring that it was secured after a maintenance inspection; also causal was the pilot’s inadequate preflight inspection 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=WPR11LA352) · AI Analytics · CC0 1.0*