# NTSB Accident SEA93GA041
> **CESSNA 550** · 1992-12-18 · BILLINGS, MT, USA · FATL
## Event
- **NTSB number:** SEA93GA041
- **Event ID:** 20001211X16242
- **Type:** Accident
- **Date:** 1992-12-18
- **Location:** BILLINGS, MT, USA
- **Coordinates:** 45.649234, -108.379302
## Injuries
- **Highest injury:** FATL
- **Fatal:** 8
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 8
## Aircraft
- **Make:** CESSNA
- **Model:** 550
- **Registration:** N6887Y
- **FAR Part:** PUBU
- **Engines:** 2
- **Damage:** DEST
## Conditions
- **Light:** DUSK
- **Weather:** VMC
## Probable cause

THE PILOT-IN-COMMAND'S FAILURE TO FOLLOW ESTABLISHED VORTEX AVOIDANCE PROCEDURES, AS PUBLISHED IN THE AIRMAN'S INFORMATION MANUAL, TO PROVIDE HIS OWN WAKE TURBULENCE SEPARATION.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=SEA93GA041) · AI Analytics · CC0 1.0*