# NTSB Accident LAX91LA034
> **AEROSPATIALE AS-350-B** · 1990-11-16 · KAHULUI, HI, USA · MINR
## Event
- **NTSB number:** LAX91LA034
- **Event ID:** 20001212X24639
- **Type:** Accident
- **Date:** 1990-11-16
- **Location:** KAHULUI, HI, USA
- **Coordinates:** 20.869192, -156.45079
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 2
- **Uninjured:** 5
- **Total aboard:** 7
## Aircraft
- **Make:** AEROSPATIALE
- **Model:** AS-350-B
- **Registration:** N350CB
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** NDRK
- **Weather:** VMC
## Probable cause

THE PILOT'S INADVERTENT DEACTIVATION OF THE HELICOPTER'S HYDRAULIC BOOST SYSTEM AND HIS IMPROPER REMEDIAL ACTION THEREAFTER TO THE INFLIGHT SITUATIONS WHICH HE CREATED. A CONTRIBUTING FACTOR WAS RELATED TO THE MANUFACTURER'S INADEQUATE LOCATION AND DESIGN (SHAPE) OF THE HYDRAULIC TEST SWITCH.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX91LA034) · AI Analytics · CC0 1.0*