# NTSB Accident CHI08FA050
> **Boeing 777-222** · 2007-12-14 · Chicago, IL, USA · SERS
## Event
- **NTSB number:** CHI08FA050
- **Event ID:** 20071231X02013
- **Type:** Accident
- **Date:** 2007-12-14
- **Location:** Chicago, IL, USA
- **Coordinates:** 41.97861, -87.904724
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 263
- **Total aboard:** 264
## Aircraft
- **Make:** Boeing
- **Model:** 777-222
- **Registration:** N220UA
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** MINR
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

Emergency evacuation due to dense smoke in the cabin and the possibility of an on-board fire, which resulted in a serious injury to one of the 264 passengers and crew.  An additional cause was the failure of an engine bearing, allowing oil to migrate into the environmental system, and resulted in the smoke in the cabin.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI08FA050) · AI Analytics · CC0 1.0*