# NTSB Accident ANC00LA132
> **Eurocopter AS-350B-3** · 2000-09-23 · KETCHIKAN, AK, USA · NONE
## Event
- **NTSB number:** ANC00LA132
- **Event ID:** 20001212X21898
- **Type:** Accident
- **Date:** 2000-09-23
- **Location:** KETCHIKAN, AK, USA
- **Coordinates:** 55.609577, -131.579971
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** Eurocopter
- **Model:** AS-350B-3
- **Registration:** N405AE
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's inadvertent activation of the collective flight stop/emergency fuel augmentation switch, which resulted in engine and main rotor overspeeds, thereby precipitating failures of the tail rotor drive shaft coupling and power turbine blades.  A factor associated with the accident was the manufacturer's inadequate design of the flight stop switch, which has insufficient safeguards to preclude inadvertent activation.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ANC00LA132) · AI Analytics · CC0 1.0*