# NTSB Incident CHI95IA119
> **BOEING 737-222** · 1995-04-07 · CHICAGO, IL, USA · NONE
## Event
- **NTSB number:** CHI95IA119
- **Event ID:** 20001207X03252
- **Type:** Incident
- **Date:** 1995-04-07
- **Location:** CHICAGO, IL, USA
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 116
- **Total aboard:** 116
## Aircraft
- **Make:** BOEING
- **Model:** 737-222
- **Registration:** N9090U
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** MINR
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

the inadequacy or deterioration of lubricating grease in the wheel bearing, which led to the total bearing failure and subsequent loss of the wheel.  Factors were the insufficiently defined procedures for repacking the bearing, along with an insufficient method of retaining lubricant within the bearing.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI95IA119) · AI Analytics · CC0 1.0*