# NTSB Accident ANC90LA170
> **Bell 206B** · 1990-09-09 · KOKHANOK, AK, USA · SERS
## Event
- **NTSB number:** ANC90LA170
- **Event ID:** 20001212X24156
- **Type:** Accident
- **Date:** 1990-09-09
- **Location:** KOKHANOK, AK, USA
- **Coordinates:** 59.849311, -154.559753
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Bell
- **Model:** 206B
- **Registration:** N385EH
- **FAR Part:** 133
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE FAILURE OF THE COMPRESSOR END OF THE AIR COMPRESSOR SCROLL TO TEE TUBE ASSEMBLY CAUSING THE ENGINE TO SPOOL DOWN. THE FORCED LANDING IN ENEVEN, UNPREPARED, AND LIGHTLY FORESTED TERRAIN WERE FACTORS.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ANC90LA170) · AI Analytics · CC0 1.0*