# NTSB Accident LAX06GA254
> **Aviation International Rotors CH-54A** · 2006-08-05 · Happy Camp, CA, USA · FATL
## Event
- **NTSB number:** LAX06GA254
- **Event ID:** 20060814X01171
- **Type:** Accident
- **Date:** 2006-08-05
- **Location:** Happy Camp, CA, USA
- **Coordinates:** 41.660831, -123.448333
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** Aviation International Rotors
- **Model:** CH-54A
- **Registration:** N6156U
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The fatigue failure of tail rotor blade spindle, which resulted in the separation of the blade and tail rotor gearbox.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX06GA254) · AI Analytics · CC0 1.0*