# NTSB Accident SEA06LA162
> **Kaman HH-43F** · 2006-08-18 · Metaline Falls, WA, USA · FATL
## Event
- **NTSB number:** SEA06LA162
- **Event ID:** 20060824X01238
- **Type:** Accident
- **Date:** 2006-08-18
- **Location:** Metaline Falls, WA, USA
- **Coordinates:** 48.82722, -117.296669
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Kaman
- **Model:** HH-43F
- **Registration:** N559D
- **FAR Part:** 133
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The failure of the left-hand cross-shaft input internal spline while the helicopter was in a hover, which resulted in the loss of gear box timing, in-flight blade contact and separation, and the subsequent loss of control and impact with a log deck.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=SEA06LA162) · AI Analytics · CC0 1.0*