# NTSB Accident NYC04FA117
> **Eurocopter AS-350BA** · 2004-05-04 · Brooklyn, NY, USA · SERS
## Event
- **NTSB number:** NYC04FA117
- **Event ID:** 20040512X00594
- **Type:** Accident
- **Date:** 2004-05-04
- **Location:** Brooklyn, NY, USA
- **Coordinates:** 40.644165, -73.953056
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 2
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 3
## Aircraft
- **Make:** Eurocopter
- **Model:** AS-350BA
- **Registration:** N4NY
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's failure to maintain control of the helicopter after a loss of hydraulic system pressure due to a failure of the hydraulic pump belt.  Factors in this accident were the pilot's misidentification of a hydraulic failure, the pilot's subsequent failure to perform the appropriate emergency procedure, and the improper installation of the hydraulic pump belt by maintenance personnel.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=NYC04FA117) · AI Analytics · CC0 1.0*