# NTSB Accident CHI03LA237
> **Boeing B777-222** · 2003-07-17 · Chicago, IL, USA · SERS
## Event
- **NTSB number:** CHI03LA237
- **Event ID:** 20030807X01283
- **Type:** Accident
- **Date:** 2003-07-17
- **Location:** Chicago, IL, USA
- **Coordinates:** 41.979721, -87.904441
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 269
- **Total aboard:** 270
## Aircraft
- **Make:** Boeing
- **Model:** B777-222
- **Registration:** N779UA
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** —
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The turbulence encountered during the descent which seriously injured a passenger returning to her seat after the seat belt sign was activated.  A factor was that it was not possible for the returning passenger to comply with the lit seat belt sign.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI03LA237) · AI Analytics · CC0 1.0*