# NTSB Accident SEA97FA196
> **Southern Aero UH-1B** · 1997-08-27 · SKYKOMISH, WA, USA · FATL
## Event
- **NTSB number:** SEA97FA196
- **Event ID:** 20001208X08741
- **Type:** Accident
- **Date:** 1997-08-27
- **Location:** SKYKOMISH, WA, USA
- **Coordinates:** 47.640823, -121.329635
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Southern Aero
- **Model:** UH-1B
- **Registration:** N896W
- **FAR Part:** 133
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** Unk
## Probable cause

A fatigue fracture in the main rotor mast, which resulted in an in flight separation of the main rotor from the helicopter.  Contributing to the accident was insufficient Federal Aviation Administration airworthiness standards and requirements for the aircraft.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=SEA97FA196) · AI Analytics · CC0 1.0*