# NTSB Accident NYC07MA073
> **AEROSPATIALE AS350BA** · 2007-03-09 · Princeville, HI, USA · FATL
## Event
- **NTSB number:** NYC07MA073
- **Event ID:** 20070321X00315
- **Type:** Accident
- **Date:** 2007-03-09
- **Location:** Princeville, HI, USA
- **Coordinates:** 22.2, -159.433334
## Injuries
- **Highest injury:** FATL
- **Fatal:** 4
- **Serious:** 3
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 7
## Aircraft
- **Make:** AEROSPATIALE
- **Model:** AS350BA
- **Registration:** N354NT
- **FAR Part:** 135
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The failure of maintenance personnel to properly tighten (torque) the flight control servo lower attachment clevis, and reinstall a functioning lock washer, which resulted in a flight control disconnect and a complete loss of helicopter control. Contributing to the accident was the operator's failure to ensure its maintenance program was being executed in accordance with Federal regulations.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=NYC07MA073) · AI Analytics · CC0 1.0*