# NTSB Accident CHI99LA184
> **Boeing 777-222** · 1999-06-12 · Madison, WI, USA · SERS
## Event
- **NTSB number:** CHI99LA184
- **Event ID:** 20001212X18945
- **Type:** Accident
- **Date:** 1999-06-12
- **Location:** Madison, WI, USA
- **Coordinates:** 43.056832, -89.404014
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 8
- **Uninjured:** 287
- **Total aboard:** 296
## Aircraft
- **Make:** Boeing
- **Model:** 777-222
- **Registration:** N781UA
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** —
## Conditions
- **Light:** NDRK
- **Weather:** VMC
## Probable cause

the pilot-in-command's inadequate evaluation of the weather conditions.  Factors associated with the accident were the turbulence encountered and the seat belt sign was not illuminated.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI99LA184) · AI Analytics · CC0 1.0*