# NTSB Accident ANC08LA083
> **BELL UH-1B** · 2008-06-30 · Iliamna, AK, USA · NONE
## Event
- **NTSB number:** ANC08LA083
- **Event ID:** 20080709X01001
- **Type:** Accident
- **Date:** 2008-06-30
- **Location:** Iliamna, AK, USA
- **Coordinates:** 61.270645, -149.789825
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** BELL
- **Model:** UH-1B
- **Registration:** N64RA
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The failure of company maintenance personnel to ensure the helicopter was properly maintained, resulting in a severe in-flight vibration due to collective bounce. Contributing to the accident was loose and worn bearings on the helicopter's stabilizer bar, swashplate, flight control tube assemblies, and the right and left hydraulic servos.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ANC08LA083) · AI Analytics · CC0 1.0*